Oyumino Sayoko is an OL. When at home, she loves taking a bath. She always thinks about things related to baths, like bath bombs, snacks after a bath, and bathroom cleaning techniques.

Years after retiring from their formidable ninja lives, a dysfunctional family must return to shadowy missions to counteract a string of looming threats.

Ichiro is a PE teacher in 1986 feared by his students for a "tough love" approach, harsh tongue and frequently “inappropriate” behavior. He’s also a dad trying to raise a rebellious daughter after having lost his wife to illness. When he gets transported in time to 2024, he encounters modern sensibilities that teach him about empathy but also gives people of today a reason to rethink their own political correctness in this time traversing comedy about change.