The Mark of Athena

Humanity is in danger because, in a month, the goddess Gaia and her descendants will awaken, and a war will begin between the gods and the giants. The only ones who can stop the goddess are seven heroes, including Percy Jackson. But they only have a few days before one of their friends dies at the hands of the twin giants. The heroes face a choice: to rush toward danger or to trust a prophecy that predicts their deaths—and change their path.