Mina Fukuhara lives a happy married life when her husband gently smiles and asks, "Don't you think it's time we had a baby?" Overwhelmed by love for his affectionate wife, he feels his heart stir. But everything changes suddenly when an old classmate reunion reignites the past. A video arrives on her husband's phone—showing Mina with a man claiming to be her ex-boyfriend. Caught between shock and confusion, Mina is gradually drawn into the other man's rhythm. Witness the forbidden moment unfold through a video letter, as the woman he loves is seduced by another man. Because he loves her, he can't look away. Can you bear to watch until the very end?