Jenny Sylvester and her eldest daughter Christine are watching TV, her youngest daughter Jackie is in bed .Outside the house and all across England is the worst weather in years. Her husband Mack is a night driver for English-Scottish Transport, he is at that moment in his thirty two ton articulated truck heading north up the M6 motorway for Glasgow, Scotland .Jenny cannot help but worry for his safety driving in the terrible weather blanketing England and Scotland. Just after ten thirty that evening the doorbell rings, fearfully she answers the door, Upon opening it she sees standing there in the pouring rain a work colleague of her husband Mack. Asking him in she finds out from him that Mack her husband is in serious trouble. The events that follow that evening bring horror that changes the lives of Jenny and her two daughters Christine and Jackie forever as the horror unfolds.