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.

Top agent Mr. Chan (Dayo Wong) suddenly finds himself removed from duties after his partner Wonder Child unintentionally offends a policewoman, Ms. Shek. But when a financial officer goes crazy due to drugs, Mr. Chan is called back in to solve the case, which he accepts even though this means partnering up with Ms. Shek. The two have some ups and downs while working together, eventually leading to romance.