Promises are dangerous things. Oaths, even more so. In this world, Percy convinces Bianca not to join the Hunt. In this world, he swears the oath to Nico. In this world, he is not the child of the prophecy. And everything goes wrong because of it.

In a world with monsters, gods, and prophecies, Percy Jackson just wanted to experience a normal life. He has one year left before he turns sixteen and he's going to make the most of it. And Rachel? She's just happy to have someone to hang out with.