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.

When demonic cheerleaders invade his high school, Percy Jackson hurries to Camp Half Blood, from whence he and his demigod friends set out on a quest through the Labyrinth, while the war between the Olympians and the evil Titan lord Kronos draws near.

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.

"After a monster apocalypse hits town, average thirteen-year-old Jack Sullivan builds a team of friends to help slay the eerily intelligent monster known as Blarg"--

Ethan tries to help his toddler sister find her own bedtime monster.

Janner Wingfeather's father was the High King of Anniera, but his father is gone. The kingdom has fallen, the royal family is on the run, and the Fang armies of Gnag the Nameless are close behind. Janner and his family seek refuge in the last safe place in the world, the Green Hollows. But there's a big problem. Janner's little brother--heir to the throne of Anniera--has grown a tail. And gray fur ... The three Igiby siblings, heirs to a legendary...

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.

During the first winter after the Monster Apocalypse, Jack and his buddies prepare for a monstrous Christmas celebration, but a supervillainess steals Jack's prized monster-slaying weapon, his Louisville Slicer, and he vows to get it back.

Separated when the Fangs of Drang invade Ban Rona, the three Igiby siblings face sea dragons, Stranders, Ridgerunners, Cloven, and more in their final, epic battle.

A sleepy Princess in Black takes a much-needed vacation and rides her bicycle to the seaside, where she plans to nap in a hammock, but her peace is disrupted by a roaring sea monster.