Michael picks up a hitchhiker named Nicole whose daughter has been kidnapped by her ex-husband, Harold Turner, the former head of the Stompers motorcycle gang. While Michael is negotiating with Turner, Nicole snatches her daughter from her ex's backyard. At gunpoint, Turner tries to force Michael to take him to Nicole. With help, Michael makes a daring escape, and sets out to return Nicole and her daughter home. Although murderous bikers attempt to bar the way, they are no match for K.I.T.T. and Michael.