会社の上司だった男性と結婚して1年。大学生の連れ子・一樹と同居だが、円満な生活を送っている奈々。妊活にも夫は協力的だったが淡白で、義務的な営みに彼女は満たされず悶々としていた。そんなときに夫の長期出張が決まってしまい…。一樹との2人暮らしが始まるや、「家族なんだから」と急にスキンシップが増えてきて戸惑う奈々。だが夫の不在で持て余した彼女の肉体は、触れられる度に静かな疼きを覚えて…。

Nana has been married for a year to her former boss. She lives with her college-aged son, Kazuki, and they seem to be enjoying a harmonious life together. While her husband is supportive of their efforts to conceive, his lack of passion leaves her feeling unfulfilled and frustrated. Then, her husband's long-term business trip is announced… As she begins living alone with Kazuki, he suddenly becomes more affectionate, saying, "We're family now," which confuses Nana. However, her body, left untouched by her husband's absence, begins to ache quietly with each touch…