Elvin Suggs, Dimond "Di" Redding and Cobra Glynes are eager to get started on the first case for their new business, Grapevine Investigations: trail Emily Davies' philandering husband, Nick. They follow the cheating husband straight to the Coral Court Motel. Right from the start Di distrusts Emily particularly when the woman is spotted playing doctor with a plastic surgeon at the very same motel. When one of the regular guests turns up dead, the woman's sleazy landlord is quick to point the finger at Emily's cheating husband. After another body turns up at the Motel, Elvin and Di discover there's no escape until they see this twisted case through to the bitter end.