This was SUCH a fabulous book! The second series of the Camp Half-Blood Chronicles, "The Lost Hero" combines Roman and Greek mythology to weave modern-day characters into a story, and contains both old and new demigods, all beloved. Jason Grace wakes up on a bus, but he doesn't know where he is, why he's here, or who he is. He just knows he doesn't belong here. Immediately, through his confusion, he gets attacked by wind spirits and whisked off to some place called Camp Half-Blood. Even though he doesn't remember a thing, he has a feeling he's on a enemy ground. Worse, he has to go on a quest already, while he's still trying to figure out who he is. With a sort-of girlfriend daughter of Aphrodite and a feisty son of Hephaestus, can he figure this out?