Karin's childhood friend and first love, Jun, suddenly dies on her seventeenth birthday. Ten years pass...
On her twenty-seventh birthday, Karin unexpectedly finds a film camera and a stack of photographs that Jun left behind. Struck by grief, she realizes she could never forget Jun even if she wanted to.
Unable to stand the pain of the old memories, Karin burns one of the photos.
In a flash, she's thrown ten years back in time to the moment captured in the photo. Karin is so overcome with happiness to be back in a time where Jun is still alive that she falls and hits the ground hard. Just then, she hears a ringing in her ears...and is thrown back to the present.
Using the photographs, Karin moves back and forth between past and present, trying to prevent Jun's death. But in the present, it's clear that Jun has, truly, died. Could Karin possibly change the past and reverse Jun's fate?