Normally I would start again with the story of the Nameless, but perhaps you have been following the story and you don't know the game. I have been sort of explaining it as I go along, but there is a lot so I thought I would take some time to explain a few little things. Okay big things.
1. Fair Folk
These are the First. When the Primordials suddenly appeared out of the random possibility of the Wyld and created Creation there were intelligences outside of this static creation that were against it because it never changed and creatures of the Wyld are about change. There are two sets of creatures, the true Wyld which have no form and want to destroy all static forms. The second kind are the first kind that invaded Creation and the very act of invading it were given form and they liked it. The first type hated the second type because it has form. The second kind lives on the shores of creation, in the shallows, because the edge of creation in the First Age was a sharp line, but in the eroded Second Age, it is a gradation. The Fair Folk are all very good looking, or perfectly horribly looking. They are completely alien and live on plot, that is the plot of a story of their own creation. Outside of Creation they need imagination to survive and they will strip it from Humans. Because Creation has been weakened in the Second Age, it requires belief to continue to exist and so the depopulated regions are rife with Fair Folk.
2. Death Lords and the Underworld
Before the First Age, when primitive people died, their souls were reborn into new bodies or were kept in storage until they could be used. When the Gods Rebelled against the Primordials the fight was bad, some of the Primordials died. When the first Primordial died, there was no place for them to go, but viola, their soul went somewhere, where the other souls went, but the container was too little for their soul so the underworld was created. The Underworld is a mirror of Creation, each mountain and each island was mirrored there. Important towns were mirrored there but it was empty of everything living and all the souls as well. After the that great war, occasionally people died with unresolved issues and their souls lingered in this new underworld. The great disasters that occurred when the First Age Solar Exalted were murdered and the subsequent failure of creation caused hundreds of millions of souls to linger in the underworld. When some of the First Age Solar Exalted died some of them were angry that they were murdered and the dead Primordials contacted them, because their existence was torture and they could not cease to exist until Creation ceased to exist, so they contacted these powerful ghosts and a few accepted greater power in exchange for a promise to destroy Creation.
A few places in the world are severely damaged, too much death and not enough life happened in certain areas, cities with millions of people died, or millions of people were butchered and the edge of creation began to blend with the Underworld. Ghosts and other things could enter creation through these weak points. Walking through these Shadowlands is very dangerous, but exiting them can be even worse. Exiting a shadowlands at night will leave you in the Underworld and in creation in the day. A Shadowlands can be walled off with a line of salt or a line of germinating grain and they can be shrunk by doing life affirming things and grown by killing and murdering in or near them.
When the Solar Souls were released, the Death Lords got one third of them and converted them into Death Knights which are the mirror of Solar Exalted.
3. Dragon Blooded
When the Gods Decided to revolt against the Primordials, they created generals and great warriors, the Solar Exalted, and battle lords for the Generals, the Lunar Exalted, they created overseers that could look over creation and guide the battles and spy on the enemy from affair, the Sidereal Exalted and the soldiers, the footmen, the vast number of all the Exalted, millions in number more sturdy than regular Humans but much weaker than the others. Their exaltation is the only one that is hereditary, so there is a genetic component, but mystically the more diffuse the stock the lower quality of the exalt. They are called Dragon Blooded in the Second Age, in the First, they were called Terrestrial Exalted. They are split into the five elements, Fire, Water, Earth, Air and Wood. Their natures are similar to their elements. Dragon Blooded live longer than humans, about 300-400 years but potentially 50% more than this. They can use Jade as a magical material to make awesome artifacts that they can use, each element has a specific colour of jade they can use.
4. Lunar Exalted
When the Solar Exalted were created, Luna was worried that they were too powerful and would overwhelm everything and every one. Since She was the second most powerful God, she created the Lunar Exalted to be their mates and their counterpart. They balanced the Solars. They could change their shapes and assume other forms, they were bodyguards, advisors and lovers of the Solars. They were battlers. There were only three hundred in number in all of Creation but their impact was great. When the Dragon blooded overthrew the Solars, the Lunars fled Creation to the Wyld, where they changed to survive. Originally there were five castes, to match the Five Castes of the Solars, but the Wyld changed them and they became three castes, Full Moon, Changing Moon and No Moon. They also received tattoos made of the magical Moonsilver that fixed their forms in the Wyld. They are hunted by the Dragon Blooded when they can be found, but they are truly a force of nature when they are possessed, they have a war form that is not human and not animal but somewhere in between and quite a bit more powerful than either. they can live for about five thousand years.
5. Sidereal Exalted
These are the Exalts of the Maidens, the wandering stars on the constellations. Mercury, Venus, Mars, Jupiter, and Saturn. Five maidens and five castes. There are only one hundred of these exalts and they are weaker than in many ways than either the Solars or the Lunars. But they are the planners and the observers of Creation and the Loom of Fate. It is because of their role, that they foresaw a great cataclysm in the future a time when Creation would end maybe. This was just before the end of the First Age and indeed it ended because of them. Three groups formed and argued about the best way to prevent the end of everything. The Gold Faction sought to contact the Solars and hope that they could reform their destructive ways and creation would continue at the same great way. The smallest Faction belied that the Lunars could save creation, the Silver Faction. The largest Faction was the Bronze Faction who advocated killing the Solars and imprisoning their souls to prevent reincarnation and letting the great world fall into a lesser age, but one that would weather the destruction. This Faction won out and they organized the murder of the Solar Exalted, some of the Gold Faction was murdered too. The Usurpation was a very bloody affair, 90% of the Solars were wiped out in the first five days, but the cost was very high. In the battle, over a million Dragon Blooded perished and hundreds of millions of mortals. Entire nations died when the seas crashed over them and drowned them, the battle ruined the capital city, a city of wonder that had a hundred million inhabitants. It took the infrastructure of the First Age hundreds of years to completely collapse, but by the end life was brutish and shortened for all.
6. Demons and Malfeus
These are the people that created it all. The Primordials are more different than anything that you can imagine, but they were the first rulers and the first creators of Creation. Gaia was one of them, the Oceans were another, Autochan was the crater of man, who prayed to the Primordials and made creation work. There were more than a few of these Primordials. And they reigned Creation for an uncounted length of time. They created the Gods to run it and they played in creation. When they created the Gods, they made sure that they could never act against them, but they did not put any such fail safe into the creatures that lived there, because they were so puny. The Gods were jealous of their power and they conspired to rebel, but we're prevented in taking any action directly. Two of the Primordials were upset by the behavior of the rest. Gaia was the world and Autochan created the animals and the humans, but the others would do things to both like change the water to acid just to see the people run around. So Autocan created the Exalts to work for the Gods to over throw the Primordials. Each Primordial had a hundred souls or more, and they had many forms that ran around creation. They were called Demons and had different levels of consciousness. The First circle Demons had only one soul and were thus mortal. The Second Circle Demons had three to five souls and were immortal, but could die by violence. The Third Circle Demons had as many as twenty souls were immortal but could die by violence, but were so powerful that they do not even related to anything mortal in perspective. If they died then something else would be created in their place and the Primordial would change to reflect its new self. And because of this the Primordials were completely immortal, unless the demon of the Third Circle that contained the Primordial's Fetch soul was killed, then the primordial would be dead, or at least wish he was dead. After a long hard fraught battle, the remaining Primordials surrendered to the Solar Exalted and the Gods and were imprisoned within their leader, Malfeous and he was exiled to Elsewhere. The Primordials as a parting shot cursed the Exalted who defeated them. They received a sixth of all the Solar's souls when the Death Lords broke the prison and are going to try to use them to break out of their prison one day.
7. Solar Exalted and the First Age.
300 individuals, from five Castes, Dawn the warriors, Zenith the priests, Twilight the artificers, Night the assassins and Eclipse the diplomats. Three hundred created for the Perfect Sun God, three hundred Exalts that had no limit except they were mortal, the lived only 3000-5000 years before dying, except they were crafty and figured out how to live longer, as much as fifty thousand years, except none go to live beyond the five thousand years because they were murdered. In that few thousand years they brought humanity up from a primitive nomadic culture to a vast magically technological society that raised the standard of living to great heights and extended Creation further than thought possible.
But they were cursed, all exalts were, but the Solars, the most powerful, were cursed the most. The more powerful they got the more destructive they became, but know one knew, they only saw the devastation that they caused. The Lunars were cursed to be more Wyld and needed to be alone, the Sidereals were cursed to be blind to everything outside their sight Terrestrials, the least powerful became most like their elements temperament. No one knew, not even the gods.
When the Usurpation occurred only few of their souls escaped imprisonment and when the prison was broken by the Death Lords, only half of their souls won free. Their potential is limitless, they could even exceed the power of the Gods. The World they made could not be sustained without them, creation shrunk and the richest person in the Second Age was only as wealthy as the poorest from the First Age. Such was the fall to the Bronze Age.
8. The Gods and the Elementals
Gods are different here. Every thing has a god, every tool has a small god that maintains it. Every concept has a god, every idea. If it has a name or has been named it has a god, every mountain every tree that dwindles in a mind anything that was made. Things that were not made have Elementals. Each tree has a dryad, and possibly a god. Every branch has a smaller elemental. Every stand of trees has a greater elemental, but if it is a grove there is a god. A forest has both, but there is a god of falling branches. Elementals occur in the five elements, fire, water, earth, air and wood, but gods are different. Seasons have gods, a storm has an elemental, but there is a god of storms. A crop has a god, like the corn goddess, but each plant has an elemental, each field has a god, but the ground has an elemental, and abandoned field has a god too. The more important a god the more power it wields, same for Elementals. Power can be gained or lost the god of flying machines in the First age was strong and not today, the god of slavery was week in the First Age and strong now. The Sun God is the most important and the most important, the elemental in a tiny dandelion fluff is not. They all do work to make creation work, but in the Bronze Age, even the gods are neglecting their duties.
Some Gods participated in the usurpation, some did not. Some like the God of war, thrived, some were tied up until after it was over. In the Bronze age some gods are neglecting their duties.
9. Mortals
It sucks to be a mortal. If you are really good at what you do, you could exalt if there is a soul for you available. Prayers of mortals run Creation. Their prayers are like money to gods and are the only thing they eat.