Plot: Phil, Stu and Doug agree to bring Alan to a sanatorium. Only the prospect of the joint trip with his three buddies brings the quirky Beard carrier to agree with the transition to the clinic. The Wolf Pack has no idea that in the meantime Mr. Chow has escaped from a jail in Thailand. The crime boss Marshall has a bill to settle with Chow. He takes Doug hostage to force the rest of the wolf pack, to find Chow for him. An Impetuous trip takes its course, leading the friends over Tijuana, Mexico to the place where - in the first movie - it all began: Las Vegas.