Keisuke, the son-in-law living with his in-laws. However, Keisuke, who was a dropout, felt distant from his elite father-in-law. One midnight, he found his mother-in-law Sakuya crying and drunk. When he listened to her story, it turned out that his father-in-law was cheating. They consoled each other and drank together, but in front of the passed-out Sakuya, Keisuke couldn't hold back his rationality…
