Daughter-in-law: The day I got my navel.

Min-wook tells her son Byung-chan's lover Hye-kyung to break up with him. After some time, Jin-hee, a high school student, and her son are forcibly married. However, Byung-chan continues to meet with his ex-girlfriend Hye-kyung and treats his wife Jin-hee unconditionally. Jin-hee is increasingly attracted to her father-in-law, Min-wook, who comforts her, and she eventually leads her relationship with Min-wook. Jin-hee, who is really desperate for her child, asks her to have a child for her father-in-law, Min-wook...