Triangle is a 2007 Hong Kong action film produced and directed by Tsui Hark, Ringo Lam, and Johnnie To. The film's title refers to both the acclaimed trio of filmmakers and to the uneasy brotherhood of the film's three protagonists. Triangle tells one story which is told in three thirty-minute segments, independently helmed by the three directors. It stars Louis Koo, Simon Yam and Sun Honglei as a group of friends who uncover a hidden treasure that quickly draws attention among others. The film's tagline is "Temptation. Jealousy. Destiny." Each word is often associated with the segments that appear in chronological order.