Yong-jun works part-time at his parents' lunch box house. Yeo-reum lives only to support for hearing-imparied swimmer sister. One day, Yong-jun meets Yeo-reum while delivering lunch boxes and falls in love at the first sight. Yeo-reum slowly her heart to warm hearted Yong-jun.

Three years ago, a father saved his daughter's life. After she's involved in a car accident, it looks like he'll have to do it again, no matter how many attempts it takes.