Wisper, a successful bar owner, comes home to find his wife and children murdered. As the only black man in a white neighborhood, the police consider him a prime suspect, and Wisper is forced to try to solve the crime on his own.
In folklore, a will-o'-the-wisp, will-o'-wisp, or ignis fatuus, is an atmospheric ghost light seen by travellers at night, especially over bogs, swamps or marshes.