Chisato and her husband went back to her husband's parents' house for the first time in a long time. Her husband's parents' house is where she lives with her father-in-law and brother-in-law. They were happy to see her back home after a long time. Chisato used her skills to cook a home-cooked meal for the two men. Then her brother-in-law told her that a delicious liquor store had opened nearby. Chisato, who loves alcohol as much as her husband, went out with her husband right away. A few hours later, the two returned home staggering and drunk. Her father-in-law hurriedly went to get him out, but her son lay down on the sofa in the living room and fell asleep. Her father-in-law picked up Chisato and put her to bed on the futon in the guest room. Just as he was thinking of carrying her husband, Chisato, who thought that her father-in-law was her husband, wouldn't let her go and asked for a kiss. Her father-in-law was confused by the woman's body that he hadn't seen in a long time, but he swallowed his saliva and kissed her. Then Chisato started begging for more and asking for more caresses. Her father-in-law, who couldn't escape, started caressing Chisato, saying that he didn't care what she did. While worrying about her son on the sofa, things gradually escalate and she crosses the line. While covering Chisato's mouth as she moans, she continues the act while worrying about her son. Then her brother-in-law, sensing an uneasy atmosphere, comes over quietly. Her drunk brother, father, and sister-in-law are having sex. Her brother-in-law can't help but take a picture of the scene. After her father-in-law climaxes and the act is over, Chisato seems to feel refreshed and begins to sleep. Her brother-in-law also quietly leaves the place. The next day, Chisato appears as her brother-in-law is looking at something with a grin. Chisato is shocked when her brother-in-law quickly hides it and asks her to show him. It is a picture of the act with her father-in-law yesterday. Her brother-in-law tells the flustered Chisato that he will keep it a secret if she does it to him too, and Chisato nods and gives her body to his brother-in-law...