There is something you just cannot leave behind in your life.

Once a film director, Seok-woo is now working as a bus driver in hometown. He lives rather a boring and monotonous daily life until he sees a woman who looks like his ex-girlfriend, Su-yeon at the terminal one day. There, only a broken MP3 player is left on her seat, and soon he starts to go around all the repair shops around the city. Young-aeh, his coworker, getting curious about his sudden changes, shortly joins his journey to fix this small and old MP3 player.