An intriguing tale of love and lost and the memories that bind us: Andy Lau play two very distinct characters both connected by accidents and chance encounters. Ko is a paramedic working with the ambulance team when he used to be a successful doctor. His wife died a few years ago from a car crash and he feels guilty about her death so he now leads a routine life of working at very fixed hours so that he can spend time with his family and friends.

One day, Ko saves Yuen-Sam who had an accident and starts to take an interest in her life and discovers that not only has her husband, Derek, went missing a few years back, she is also suffering from a terminal illness. Derek, was a famous stylist, who was actively pursued by a supermodel, seeking an affair with him. The affair strained his marriage with Yuen-Sam and after one big argument; he left without a word.

Yuen-Sam, tells Ko that her dying wish is to spend some happy times with Derek. Ko agrees to help and in his quest, he discovers that Derek actually looks very much like himself...

The tone of the film is driven by beautiful people, heartbreaking exchanges, and flawed characters. We learn to treasure the people we love.

I personally liked the director's filmography..it was very interesting; the camera techniques that he used to film...I loved the story, how Andy Lau "replaced" Charlie Young's boyfriend to make her happy for her remaining days...hmm..imagine celebrating all the seasons of the year in a week...it was sad yet heartwarming...It explores a central idea in relationships, of taking things and your partner for granted. Yes, hands up those who are guilty of this from time to time.

You'll never truly feel the loss of something, until it's gone...