Architect Jin Woo (Lee Kwang Ki) gets into a freak car accident on the way to Chuncheon and goes into a coma. Soo Kyung (Jo Eun Sook), his wife, hears of the accident and rushes to the hospital. But she finds out that Jin Woo wasn't on his way to Chuncheon for work as he had told her.
When she goes to submit Jin Woo's insurance claim, she discovers that a boy named Cho Rok (Jun Jin Seo) has been added to their family register. Then she gets in contact with a woman who asks her to take Cho Rok and become enraged that her husband had an affair. She goes to Chuncheon to discover the truth and ends up returning home with Cho Rok.
Just what has her husband been up to? Could Cho Rok really be a son from an affair with another woman?