Keefe is on the run in the forbidden cities when they find him. At first they seem like a vanisher and a hydrokinetic, but their eyes say otherwise. They aren't elves, and they certainly aren't humans. Percy and Annabeth are enjoying a day in New York when they run into a possible demigod. They take him back to camp, and he passes through the border, but something is off about him. When demigods meet elves, tensions build and forgotten enemies arise as century old secrets are unraveled. The two species must unite in order to save both their worlds, and everything is about to change.

Sophie Foster and her friends are having a sleepover, but Sophie gets taken. Her friends receive a scroll saying to seek help from the Demi gods. Percy Jackson is living his best life. They had beaten Gaea and the titans, and he is happy with Annabeth. Until they get a prophecy saying that they need to team up with the elves and to get Sophie back before it's too late. Will they get Sophie back in time and team up? Read to find out! ⚠️Warning mentions of blood and gore ⚠️