Sam (Sam Rockwell) and Eddie (Steve Zahn) are just a couple of clueless, untalented singers. But, when they are mistaken for a pair of safecracking geniuses by a mobster named Veal Chop (Paul Giamatti), they are unwittingly sucked into a life of crime. Though they have no idea what they are doing, Sam and Eddie have no choice but to go along with the Mafia's orders and break into three safes. Things get even more complicated when Sam falls for the daughter of one of their robbery victims.