At first, there was only the Void. It had no gods to rule it. The Voice was endless, blank, and dead. It was both nothing and something. The Void was both the beginning and the ending.
Then the Three became real. There was no explosion of light. There was no alert that they had appeared. When they arrived, they knew only one thing - their role. The Three were brothers.
Balance - the youngest of the Three. He created Light and Dark, and was responsible for keeping the two equal, as well as everything else.
Order - the second youngest of the Three. He created peace, and made sure everything was working and in order.
Chaos - the oldest of the Three. He created the universe, and filled the space of the Void.
For one hundred years, this is what the Three did. Life was created on some planets, on many planets. They watched over the galaxies for one hundred years.
Then Balance faded, disappearing into the far reaches of the Void. His brothers were alarmed, as they wondered what would happen. But the balance of the universe stayed intact, thankfully.
Then Order left, abandoning the oldest brother. Chaos watched over the universe alone, with nobody but himself. He built his own home and traveled across the various galaxies, but found himself extremely bored.
So he created the protogenoi - the Primordials. All of them figured out their domains. All but three. Chaos watched Gaia, Ouranos, and Tartarus explore the universe.
They found an almost forgotten planet, almost faded beyond existence. It was gray, and circled by a moon and other planets. They named this galaxy the Milky Way, and dubbed the planet 'Earth.'
Gaia's domain became Earth, and she vowed to protect the planet at all costs. The planet flourished and Ouranos chose his domain as the Sky, casting his power across the planet. He became the atmosphere, and what mortals see as the cloudy blue sky.
Tartarus decided to settle on the planet as well, and his domain became the part underneath the Earth. His domain was the Underworld and more - he called it after himself - Tartarus.
Soon, the other Primordials took notice of this planet. Chronos, the Primordial of Time, came and spread his domain across it and caused it to have it's own calendar year. Nyx and Erebus, the Primordials of Night and Darkness, created the nighttime and shadows. Pontus and Thalassa, Primordials of Water and Islands, created the seas and islands that were in the middle of those seas.
Gaia and Ouranos fell in love. The Titans, giants, and more were born. Kronos, the Titan of Time (named after Chronos) took a scythe and slaughtered his father, casting the parts of the father across the world. Gaia, outraged, hid away from Kronos as she watched her son become a monstrosity.
Kronos had six children with his sister, and he ate five of them. Hestia, Demeter, Hera, Poseidon, and Hades - the gods. Rhea, their mother, hid Zeus by giving him to Gaia. Zeus was raised until he became old enough to kill Kronos and save the rest of his siblings.
The gods ruled the Earth on Mount Olympus with Zeus and Hera as the king and queen, and traveled to modern-day New York as the Western civilization moved. That is where they now reside, with the rest of the gods - Artemis, Apollo, Dionysus, Hephaestus, Ares, Athena, and Aphrodite.
There are many demigod children of most of these gods, except for Artemis, Hera, and Hestia. These half-mortal, half-god children live in either Camp Half-Blood or Camp Jupiter, depending on their heritage.
Two wars happened, the second Titan war and the giant war. Both wars were led by Perseus Jackson, the son of Poseidon and Sally Jackson. He was alongside his friends the entire time. He was the bearer of the Mark of Achilles, prophesied by two Great Prophecies, and more.
He had caught the attention of the entire mythological world, including gods from Norse and Egyptian mythology. However he had caught the attention of the One, who had watched him since he turned twelve.
Perseus Jackson had caught the attention of Chaos.