Joon Seok, a successful author, and Deok Hee, an art instructor look like a normal couple who lead happy lives, but their biggest problem is Deok Hee's selective amnesia. One day, Joon Seok goes on a journey to prepare his new novel and tragically dies in an accident. Overwhelmed with sorrow, Deok-hee heads to the same place and as she traces his journey, she faces the unexpected truth.