Jason, Piper, and Leo, three students from a school for bad kids, find themselves at Camp Half-Blood, where they learn that they are demigods and begin a quest to free Hera, who has been imprisoned by Mother Earth herself.

Demigod Percy Jackson, still with no memory, and his new friends from Camp Jupiter, Hazel and Frank, go on a quest to free Death, but their bigger task is to unite the Greek and Roman camps so that the Prophecy of Seven can be fulfilled.

Four short stories plus original art, interviews, puzzles, and games, reveal new insights into the world of Percy Jackson and the other heroes of Olympus.

Hazel and her crew on the Argo II have a choice to make: to bring the statue of Athena Parthenos back in order to stop Camp Half-Blood and Camp Jupiter from warring with one another; or to sail on to find the House of Hades and attempt an impossible rescue of Percy and Annabeth from Tartarus. Meanwhile Annabeth and Percy are trying to find the Doors of Death from the other side of Tartarus in order to stop the vengeful Earth Mother Gaea from rising...

Jason has a problem. He doesn't remember anything before waking up on a school bus holding hands with a girl. Apparently she's his girlfriend Piper, his best friend is a kid named Leo, and they're all students in the Wilderness School, a boarding school for "bad kids." What he did to end up here, Jason has no idea--except that everything seems very wrong. Piper has a secret. Her father has been missing for three days, and her vivid nightmares reveal...

Percy is confused. When he awoke after his long sleep, he didn't know much more than his name. His brain-fuzz is lingering, even after the wolf Lupa told him he is a demigod and trained him to fight. Somehow Percy manages to make it to the camp for half-bloods, despite the fact that he had to continually kill monsters that, annoyingly, would not stay dead. But the camp doesn't ring any bells with him. Hazel is supposed to be dead. When she lived before,...