2 seasons available
Chloe has been missing school by going on missions with her siblings; she has to go to summer school to catch up on everything she has missed; Max, acting as the substitute for summer school, has a new student who agrees to tutor her.
Captain Perfect's younger sister, Penny, is headed down the path of becoming a supervillain; eager to impress Captain Perfect, Max takes it upon himself to guide her toward a better path.
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.
Max convinces Cherry to pretend they are dating to get discounts at her new workplace, Splat by Sea; Chloe must choose between winning a quiz or supporting Billy's wish to join her team.
Phoebe and Max tell holiday stories to compete in the Thundermans Story Slam, but it's Chloe's story that makes them understand the meaning of the holiday.
A training accident makes Chloe's powers faulty; Max tries to cure her and gets a misleading positive result, so she goes to a party; but his treatment actually creates brand-new powers Chloe can't control.
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.
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.
The former protector of Secret Shores arrives at the Thundermans' beach house and reclaims it as his home; Phoebe, Max and Chloe try to reason with him; when a protest at the school goes wrong, the former hero proves more harmful than helpful.