Lai Yiu Fai (Tony Leung) and Ho Po Wing (Leslie Cheung) are a gay couple. In order to have a new beginning, they left Hong Kong and came to Argentina with a beautiful dream (to see the Great Falls of South America), but got lost in Buenos Aires. Lai Yiu Fai wanted to settle down and live a peaceful life, but Ho Po Wing indulged himself in the nightly revelry in order to find more excitement. He only regarded Lai Yiu Fai as his harbor after being injured. The two had more and more disagreements and quarrels, and the distance between their hearts became farther and farther. When Lai Yiu Fai realized that the past days could not be returned, he decided to leave Ho Po Wing. It was after he left that the meaning of despair (love for Lai Yiu Fai) fully emerged in Ho Po Wing's mind.