Produced and directed by Johnnie To and Wai Ka-Fai, the film stars Takeshi Kaneshiro and Gigi Leung.

The story is based on the illustrated book A Chance of Sunshine by Taiwanese author Jimmy Liao, who makes a cameo appearance with his wife and daughter in the film.

The book consists of a series of detailed illustrated images, with a small amount of text in poetry style.

The two laugh about the past and exchange phone numbers without asking for each other's name before parting quickly because of a coming rainstorm.

The next day the two are devastated to find out that the phone numbers they had exchanged are unreadable due to the paper getting wet during the rainstorm.

Both John and Eve, ill and not wanting to leave their home because they're afraid that they would miss the other person's phone call, decides to order delivery from Ruby's restaurant.

Once John and Eve are discharged from the hospital they find out that Dr. Hu and Ruby had literally moved into each of their apartments, but both make it clear that they are not interested in them since they already love someone else.

Taking revenge on John and Eve for breaking their hearts, they send pictures to them showing how many places they had missed finding each other.

The apartment buildings that John and Eve lived at are located in Fujing Street in the Songshan District of Taipei.

"Encounter 遇見" by Stefanie Sun is not featured on the soundtrack since "At The Carousel 迴旋木馬的終端" by Gigi Leung is the Cantonese version of the same song.

[6] Derek Elley of Variety felt that the film is a "pure piece of fluff that’s sustained by clever plot twists".

[7] The poem recited by the main female protagonist of this film is ""Love at First Sight" ("Miłość od pierwszego wejrzenia") by famous Polish poet, essayist and translator Wisława Szymborska, who received the Nobel Prize in Literature in 1996.