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.

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.

While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it's up to Percy Jackson and an army of young demigods to stop the Lord of Time.

In the Third Age, an age of prophecy when the world and time themselves hang in the balance, the Dark One, imprisoned by the Creator, is stirring in Shayol Ghul.

Demi-god Percy Jackson and his friends must journey into the Sea of Monsters to save their camp. But first Percy will discover a secret that makes him wonder whether being claimed as Poseidon's son is an honor or a cruel joke.

Reunited with her merman father and now living on an island located in the Bermuda Triangle, twelve-year-old Emily accidentally awakens the fearsome kraken and also faces a bully from her past.

Orphans Sabrina and Daphne Grimm are sent to live with an eccentric grandmother that they have always believed to be dead.

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.

"To the children, the town was their whole world. To the adults, knowing better, Derry, Maine, was just their home town: familiar, well-ordered, a good place to live. It was the children who saw--and felt--what made Derry so horribly different. In the storm drains, in the sewers, It lurked, taking on the shape of every nightmare, each person's deepest dread. Sometimes It reached up, seizing, tearing, killing.... The adults, knowing better, knew nothing....

The monstrous Turbo Toilet 2000 is determined to take revenge on George, Harold, and Captain Underpants.