Seven years into her marriage, Toko feels her husband's affection fading. Hoping to rekindle their relationship, she suggests a hot spring getaway. Excited for their first trip together in ages, Toko's hopes are crushed when she returns from the bath to find her husband flirting on the phone with another woman. Deeply hurt, she finds comfort in Sato, a kind man staying at the same inn. Drawn into his warm embrace, Toko experiences intense pleasure for the first time, surrendering both body and soul as passion awakens within her.