Hirosue Ryoko plays the role of Uno Sawako, a plucky single mother of 3 boys. Due to her personality, fearing that she will be the ruin of him, Sawako's husband takes off and abandons her and their 3 boys. Sawako is left to bring up their 3 sons by herself. Living an average normal life, one day, Hoshio, a man who is suffering from amnesia, suddenly appears before her. Even though he is much younger than her, Sawako falls in love with Hoshio at first sight. A dormant heart that now has love awakened, Sawako decides to keep Hoshio by her side by telling him, "You are my husband"... Will Sawako be able to struggle through balancing the reality of being a mother of 3 boys with her immatured tendre for Hoshio?

Sawako (Ryoko Hirosue) was dumped by her husband and since then she has raised her three sons alone. One day, she happens to meet  a young man (Sota Fukushi) who is dying. She falls in love with him at first sight. The young man also suffers from memory loss. Sawako names him Hoshio. Taking advantage of his memory loss, she decides to make him live with her and as the father of her three sons.

Now, Sawako, her three sons, her grandmother and Hoshio all live together. Sawako hopes Hoshio never regains his memory. Hoshio also begins to develop feelings for her. Whenever Sawako has troubles, Hoshio helps her out with his mysterious ability. Hoshio's past is also a mysterious. A mystery that is finally revealed.