The long-awaited prophecy surrounding Percy Jackson's sixteenth birthday unfolds as he leads an army of young demigods to stop Kronos in his advance on New York City, while the Olympians struggle to contain the rampaging monster, Typhon.

Percy hurries to Camp Half-Blood after his high school is invaded by demonic cheerleaders, and joins his demigod friends on a quest through the Labyrinth, while the war between the Olympians and the evil Titan lord Kronos draws near.

Thirteen-year-old Clivo Wren learns that his recently deceased father was not an archaeologist as he was told, but rather a cryptid catcher, known for finding elusive mythological creatures, and now Clivo must pick up where his father left off and track down a cryptid whose blood grants immortality before the knowledge falls into the wrong hands.

Logan and Zoe's efforts to identify a saboteur are complicated by the unchecked activities of the kraken and the agenda of Logan's famous tracker mother.

"Elliot and Uchenna join Professor Fauna on another adventure--a trip to the Basque country where they have to save a herensuge from the billionaire Schmoke Brothers"--

Amy starts a unicorn fan club which soon attracts some unusual members.

A Dogg family and a Katt family are spending their vacations at Western Frontier Park fighting with each other when a youngster from each family becomes lost in the dangerous forest.

"Darkmouth is the only village in the world where the fierce magical creatures known as Legends still attack--and it's up to twelve-year-old Finn, the worst Legend Hunter in Darkmouth's history, to uphold his family's legacy and save his hometown"--

Zoe Kahn's family has been in charge of keeping watch on the secret menagerie of mythical creatures like unicorns, dragons and phoenixes for centuries. Six griffin cubs have escaped, or is someone trying to sabotage the Menagerie? Zoe and her classmate Logan Wilde must get the cubs back.

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.