When Azusa Kirihara comes to the interview, the AV director is informed that she will be going on a family trip next month, so he begs her to let him film an AV during the family trip. After successfully greeting her parents and receiving permission to join the trip, the AV director sets his sights on Azusa Kirihara sister, who is also on the family trip! During the trip, the older sister and younger sister gradually become closer than family. In the midst of eroticism that goes beyond reason, the forbidden sister bowl finally occurs!