A beautiful mother, Fuyuka, lives with her son. She feels lonely because she has not been able to see her husband, who is away on a long-term assignment overseas. One day, her son's best friend, Kazuma, comes to cheer on a Japanese baseball player as he breaks a world record. Kazuma, who has had feelings for Fuyuka since childhood, suddenly kisses her. Fuyuka feels her heart pounding uncontrollably, despite her own will. Kazuma continues to pursue her, and Fuyuka has her lips stolen once again, rekindling the unfaithful desires she has been suppressing...