In the week before private detective Marty Hopkirk's wedding to waitress Jeannie Hurst, he and his partner, Jeff Randall, get a job from famous artist Gordon Stylus to watch over his wife, as he fears for her safety. In the course of the assignment, Marty is killed, and the grieving Jeff and Jeannie must investigate how he died, which then endangers their lives. Fortunately Jeff begins to get help from Marty's ghost, which only he can see. Marty fails to get back to his grave in time and is cursed to walk the earth for the duration of Jeff Randall's life, visible only to him...