The film structure loosely follows that of the minuet: four "movements", which are announced by titles: two themes, a duet, and a set of variations.
1- Chan Kar-fu's (Takeshi Kaneshiro) introduction
2- Yau Muk-yan's (Aaron Kwok) effect on his life
3- Mok Man-Yee's (Kelly Chen) effect on their lives
4- Chan Kar-fu's literary vision of love. This fourth "movement" (Variations) is a wild fantasy on the previous material, based on the novel written by Kaneshiro's character: The XO Pair.
Unemployed aspiring writer Yau Muk-yan (Aaron Kwok) moves into the apartment of Chan Kar-fu (Takeshi Kaneshiro), a shy piano tuner. Both will soon fall in love with their new neighbor Mok Man-Yee (Kelly Chen).