After a hurricane, John B, JJ, Pope and Kiara plunge headlong into danger and adventure when they find a mysterious sunken wreck.

Convinced that the clue found onboard the boat connects to his missing father, John B leads his friends on an increasingly frantic search for answers.

As the gang hatches an illicit scheme to get to the bottom of the deep-sea mystery, John B confronts Sarah while Pope jumps at the chance for revenge.

When John B's supervision-free home life catches up to him, he receives a well-timed assist — and some spiffing up — from the last person he expects.