 A short and tiny criminal named Calvin (Marlon Wayans) has just commited a robbery involving stealing a precious diamond from a jewelry store along with his dim-witted partner, Percy (Tracy Morgan.) However, the snatch goes awry, and Calvin ends up ditching the diamond by stashing it in a woman named Vanessa s purse.(Kerry Washington). Vanessa happens to be married to a wannabe-dad named Darryl (Shawn Wayans). Calvin must now pose as a young infant in order to retrieve the stolen diamond. However, a simple quick-and-grab turns into a friendly relationship between Calvin and Darryl.