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

After her father passed away, Summer stopped taking photos. One day, she falls for Yeonwoo, the school's soccer star, and takes her picture with her late father's camera. When she develops the film, she finds mysterious photos of her father's high school lover. In these photos, Summer uncovers a secret about her father. Will she be able to pursue her first love and uncover her father's hidden truth?