An aunt can't help but see her nephew, who is staying with her, as a man. Rena, who is frustrated because her husband is working away from home, is tempted one day and seduces her nephew Jun. However, Jun, who had promised his mother that he would not take part-time jobs or date while he was in school and would instead focus on his studies, stubbornly refuses. Although she is attracted to Jun's attitude, Rena can no longer stand it and takes a bold step...