Kuzukake Shoutarou is a high school student living alone after his only family members disappeared during a trip. Suddenly, a group of extraordinarily capable women appears at his doorstep, claiming to be his new stepmothers. These women are not ordinary caretakers; they are exceptionally strong and skilled, taking over every aspect of housework and daily life with meticulous precision. What begins as a straightforward rescue arrangement quickly evolves into an unpredictable, chaotic living situation. The stepmothers compete for his attention and affection, blurring the lines between maternal care, romantic interest, and outright absurdity. The story unfolds as a harem romantic comedy, with action, ecchi comedy, and over-the-top scenarios. Shoutarou must navigate the bewildering attentions of these powerful women while dealing with the mystery of his missing relatives and the increasingly strange dynamics of his new household.