A drama exploring infidelity and caregiving within everyday family life, centered around the relationship between a father and son. The story unfolds in an ordinary household consisting of a married couple and the husband's father. Saori, the daughter-in-law, decides to care for her father-in-law like he was her own father, even after learning he requires constant care. However, as his dementia progresses, the old man begins calling Saori by the name of his late wife. Though his mistaken advances border on sexual harassment, Saori gently accepts them, concealing the turbulent emotions within. The narrative reveals the hidden tensions in familial relationships, portraying the quiet suffering intertwined with love and compassion.