Beautiful mother Minami lives with her son. She has been lonely, unable to see her husband for a long time due to his overseas assignment. One day, her son's best friend Koji came to cheer on the moment when a Japanese track and field athlete achieves a world record. Kouichi, who has had feelings for Minami since they were young, suddenly stole a kiss from her. Despite herself, Minami felt her heart pounding uncontrollably. Afterwards, when Kouichi pressed his advances again and stole another kiss, the unfaithful desires she had been suppressing ignited…
