Prologue:

5,000 millennia ago, when Percy Jackson and his friends defeated the Titan Lord Kronos, they were granted immortality by the gods. Everything was going fine till Percy found out that Annabeth was cheating on him with Connor Stoll, out of all the days in the year he found out on his 17th birthday. A week after he found out that he had a younger brother that went by the name Daniel Wilde who was an arrogant, boastful guy. Poseidon then announces Daniel as his favourite son all because he took out a couple of "hard" threats and saved a group of demigods on a quest. The whole camp has forgotten about him except for a couple of his real friends Thalia, Nico and Grover. A few days later Percy couldn't take it anymore so he left telling them that he was leaving and why. They in turn told Hestia the only goddess who remembered Percy and cared for him. A couple of days after, Chaos appeared before Percy just as he was about to pass out from hunger and exhaustion. Chaos offered him a new life as one of his immortal warriors. Percy of course accepted the offer.