Substitute teacher Rob Anderson is offered a full-time teaching job, but is reluctant to make that long-term commitment. He and his fiancée, physician Megan Swope, fly to Charleston, South Carolina, for their wedding the next day. Megan's disapproving father, high-powered businessman Reginald, has invited Megan's successful ex-boyfriend Cody. Rob goes out drinking with his best man, Benny, only to wake up on his wedding day, naked in an elevator in a hotel far from the church. He is arrested for streaking, but when the church bells ring, he is pulled back in time, waking up in the elevator an hour earlier; Rob is in a time loop, reliving this hour.