Megumi, a beautiful mother, lives with her son, Satoshi. Although her days are happy, she feels lonely because she has not been able to see her husband who has been away for a long time due to overseas assignments. One day, when his son's best friend, Kazuma, whom he had known for a long time, came to his house to watch a martial arts match, Kazuma suddenly confessed to him and kissed him. Contrary to her will, Megumi felt her heart pounding in her chest. After that, Megumi is pressed by Kazuma and accepts another kiss, and she becomes addicted to the pleasure...