Nozomi, a married woman whose husband is away on a business trip, lives with her son. One day, Nozomi is caught masturbating by her son's friend who came to stay and study, and he forces her to have a relationship with him. Soon, the friends play with Nozomi's body, make her cum, and commit adultery with her, hiding it from her son. And then... Nozomi's body becomes intoxicated with the pleasure she had forgotten for a long time...