When Camp Half-Blood, the only safe haven for demigods, comes close to being overrun by mythological monsters, Percy must find his best friend Grover, who is prisoner on an island in the Bermuda Triangle, and then set out to save the Camp.

Publisher Annotation: Percy Jackson is about to be kicked out of boarding school again. And that's the least of his troubles. Lately, mythological monsters and the gods of Mount Olympus seem to be walking straight out of the pages of Percy's Greek mythology textbook and into his life. And worse, he's angered a few of them. Zeus's master lightning bolt has been stolen, and Percy is the prime suspect. Now Percy and his friends have just ten days to...

"Demon's life on Mount Olympus has never been busier. Thanks to the awful heroes down on Earth, Demon has even more injured beasts to care for. And worse still, the goddess Psyche wants Demon to "borrow" Zeus's prized eagle for an urgent mission. But is her task worth the risk of offending the king of the gods?"

Young Poseidon must overcome his fear of the sea and its creatures to save a fellow Olympian. "With Cronus and the other Titans in pursuit, and various monsters before him, young Poseidon must overcome his fear of the sea and the creatures that lurk in it in order to save a fellow Olympian."--

"When Karen moved to Mt. Olympus, she certainly didn't expect to start junior high with a bunch of gods and goddesses--let alone discover she's a demigoddess (who doesn't yet know her powers)! Having recently joined the school newspaper, Karen decides to investigate a mysterious online troll that goes by the moniker M1N0T4UR. This leads her to a treacherous maze beneath the school where Karen and her friends must complete a set of phases to leave...

After learning that he is the son of a mortal woman and Poseidon, god of the sea, twelve-year-old Percy is sent to a summer camp for demigods like himself, and joins his new friends on a quest to prevent a war between the gods.