In the eyes of outsiders, Diana (Melissa McCarthy) is a wealthy woman who spends money like water. No matter how expensive the luxury goods are, Diana can swipe the card without blinking an eye and put it into her pocket. Diana is not moved or distressed by her own squandering, because the bills generated by her swiping the card will be sent to a man named Sandy (Jason Bateman). It turns out that Diana is a credit card thief, and the money she uses is all Sandy's hard-earned savings. When the police found Sandy, he discovered that his credit card had been stolen. The angry Sandy decided to go to Miami where Diana was in person, vowing to bring this lazy termite to justice. When Sandy successfully found Diana and was about to take her back to Denver, the poor man's good luck ran out, and this seemingly simple thing gradually got out of Sandy's control.