Oh no! Percy, Artemis, Zoe, Phoebe, Chloe, Thalia, Nico, Jason, Piper, Apollo, Reyna, Clarisse, Luke, and more been thrown back in time. They don't know how they were thrown back in time, but they are going to find out. They also don't know how to get back to their time! Now they have to team up with the past gods to defeat Gaea and Annabeth! Can they do it? What about pregnant Artemis? How will everyone from the past react to the future? Will they ever be able to go home?