Hiiragi Yatsuse, a first-year high school student who struggles to make friends despite his efforts to please others. His life takes an unexpected turn when one summer day, he meets Tsumugi, an oni (demon) girl on a quest to find her mother in the human world. Snow mysteriously begins to fall... and their adventure begins.

Follows the superpowered family as they begin a new era of superhero crimefighting. Twins Phoebe and Max are enjoying their superhero lifestyle, but when one 'save' goes awry, the Thundermans are sent back to Hiddenville. While Hank and Barb enjoy their return, and Billy and Nora look forward to a normal high school life, Max and Phoebe are determined to regain their superhero status.