A married woman, Ai, accidentally sees her neighbor Ogawa naked and wiping his body. Her eyes are drawn to his thick, drooping penis, and in that moment, their gazes meet, causing Ai to flee back home. The next day, driven by sexual frustration, Ai starts masturbating but is caught in the act by Ogawa. Ai chases after him to explain the situation. The two grow closer as a result. Two people who were never supposed to get involved end up in a sweaty, intense affair, all because of this incident of being caught masturbating…
