Ma Wenshun (Lu Jue 'an) is fond of the history and installation of watches, and has a special liking for the missing Moon Moon watch "Moonwatch"(prototype of the Omega Speedmaster). Wen Shun, who makes a living by installing "matching dates", was caught by Uncle Xiao Lai (Jiang Tao), the boss of the underground watch black market owner "Laibao Store" when he sold the matching dates to Niu Rong (played by Zhang Songzhi), a gangster. Uncle Lai threatened Wen Shun and asked Wen Shun to go to Tokyo, Japan, to sneak into a high-end watch store for him to steal three pairs of "Picasso" watches that were to be auctioned in a month later, and then sell them into the black market for resale. For this mission, Uncle Xiao Lai, who was a ferocious "second generation ancestor" by nature, assigned Uncle Lai's loyal subordinates,"Big Thief"(played by Zhang Jicong) and "King Qu"(played by Bai Zhi), as well as Li Jinyou (played by Lu Hanting), the son of Sister Hong, a lock-lock expert, to go to Japan to carry out the mission. But in essence, Uncle Xiao Lai attempted to use this to wipe out the family and eliminate all the old officials. As the watch theft mission progressed under numerous difficulties, the thieves and others who realized Uncle Xiao Lai's true purpose had to protect themselves before Uncle Xiao Lai and the Japanese forces took actions, which put Wen Shun and Jinyou in an unprecedented situation...