Married to other people, their affair begins to falter. Ryo and Misato's workplace relationship turns into an illicit affair, initially passionate but gradually growing stagnant over time. Feeling that things can't continue any further, Misato desperately pleads, "Let me have you all to myself just once," inviting him on an overnight hot spring trip. However, Misato has already decided this journey will be their final encounter... Emotions waver as the end and the beginning of their affair intertwine.