Soundtrack No.1

Han Sun-woo is a rookie photographer. He doesn't talk much, but he is a kind and warm-hearted man. He is friends with Lee Eun-soo. They have been close friends for 20 years. Meanwhile, Lee Eun-soo works as a lyricist to make living. She has an honest and bright personality. Due to a reason, Han Sun-woo and Lee Eun-soo begin to live together at the same house for 2 weeks. Staying together, their relationship develops romantically.

Longtime friends walk the line between love and friendship while making music.