David, a drug dealer, is unable to pay his boss what he owes him. So his boss offers him a proposition; go to Mexico and get some marijuana for him. Knowing it's going to be difficult to get it across the border, he comes up with a plan; to pose as a family man. Now all he needs is a family so he asks Kenny, his neighbor, to be his son. He then asks Rose, a stripper he knows to be his wife. And Kenny suggests they ask Casey, a teen living on her own, to be the daughter. They call themselves the Millers and rent an RV then go into Mexico and learn that the amount of drugs is way more than David's boss hinted it would be. So they put it in the RV and make their way back to the U.S. But it turns out that David's boss is trying to pull a fast one. The drugs belong to someone else and he sets out to get them back.