Three years after their divorce, debt collector Kang Soo Hyuk (Jang Hyuk) discovers that his ex-wife Han Chae Hee (Jang Na Ra) is terminally ill. While visiting their old house, he comes across Chae Hee's old polaroid camera. When he learns of its magical ability to transport its user to the past, Soo Hyuk decides to use it to change Chae Hee's fate.