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.

Hoping that if she wins a local beauty pageant her father will come home, Raymie practices twirling a baton and performing good deeds as she is drawn into an unlikely friendship with a drama queen and a saboteur.

New friends and a mystery help Aden, thirteen, adjust to middle school and life at a dying western theme park in a new state, where her being born armless presents many challenges.

Haunted after helping her father on his ghost-themed Chicago bus tour, twelve-year-old Claire must discover what the spectral boy from the bus wants before it is too late.

Hal, who does not fit into Skandian society, ends up in a brotherband, a group of boys learning the skills that they need to become warriors, with other outcasts, and they compete with other brotherbands in a series of challenges.

Determined to recover the Adomal and to prevent the pirate Zavac from doing more damage, Hal and his brotherband crew pursue Zavac to the lawless fortress of Ragusa where, if Hal is to succeed, he will have to go beyond his brotherband training and face the pirate one-on-one in a fight to the finish.

Flint Minett has keratoconus, an eye disease, but desperately wants to win a comic book art contest so that he and his new friend McKell Panganiban will be better accepted at middle school.

When a massive storm at sea blows the Brotherband crew off course to a land so far west Hal cannot recognize it from his maps, they face an unknown enemy.

When she incurs Neptune's wrath by finding a diamond ring buried under rocks in the ocean, Emily is put under a curse that will force her to choose to be either a mermaid or a human and split up her parents forever.

In the summer before middle school, eleven-year-old Bug must contend with best friend Moira suddenly caring about clothes, makeup, and boys; a ghost haunting; and the truth about Bug's gender identity.