
Phoebe, Max and Chloe must investigate a new threat in the town of Secret Shores and aim to nurture Chloe's superhero abilities while on this mission.

Chloe struggles with her leadership skills; when a villain attacks her school field trip, Max and Phoebe have to put Chloe in charge while they try to take down the villain and defuse his dangerous astronomical weapon.

After Phoebe and Max let Chloe's friends watch a horror movie and eat candy, Jinx and Booch's parents want to meet Chloe's; with Hank and Barb away, Max and Phoebe transform into them to help Chloe; it goes well until the real Hank and Barb show up.

Mrs. Wong visits Secret Shores and threatens to reveal the Thundermans' superhero identities to the town; but Max and Phoebe's plan to have Dr. Colosso keep her quiet backfires in ways they could not have imagined.

Billy brings a new sidekick, Steve, to town and wants him to join the T-Force; Phoebe and Max agree to consider him, but when they eventually reject Steve for having a very lame power, he turns evil.