Rick Riordan

Magnus Chase has always been a troubled kid. Since his mother's mysterious death, he's lived alone on the streets of Boston, surviving by his wits, keeping one step ahead of the police and the truant officers. One day, he is tracked down by a man he's never met -- a man his mother claimed was dangerous. The man tells him an impossible secret: Magnus is the son of a Norse god. The Viking myths are true. The gods of Asgard are preparing for war. Trolls,...

"In response to an awful camp orientation video created by the god Apollo, Percy Jackson and other residents of Camp Half-Blood answer campers' questions such as 'What is this place?' and 'Do I get to keep the T-shirt?'"--

When the goddess Artemis disappears while hunting a rare, ancient monster, a group of her followers joins Percy and his friends in an attempt to find and rescue her before the winter solstice, when her influence is needed to sway the Olympian Council regarding the war with the Titans.

After discovering a secret that makes him question the honor of being the son of Poseidon, demi-god Percy Jackson journeys into the Sea of Monsters in an attempt to save Camp Half-Blood.