Just when a middle-aged aspiring bus driver thinks she and her 7-year boyfriend are headed to the altar, she learns that he is involved with another woman. A year later, she receives invitation to their wedding banquet, where she accidentally foils the plan of that woman’s ex-boyfriend to reveal her as a cheater and a swindler. These two jilted lovers decide to join forces and come up with a plan to take revenge on the alleged con woman.
The Yau's brothers are a trio of scammers who make punishing baddies their mission. A misunderstanding leads them to fellow con artists the Lui's sisters, and they join hands to scam a notorious mob boss. Through a myriad of ingenious tricks and disguises, they bring the mobster to justice as romance blossoms swiftly—all's well that ends well.