The CHP sees a new angle on cattle rustling; Ponch tries to arrange a surprise party for Jon. Thinking that it is Jon's birthday soon, Ponch plans a surprise birthday party for him. A cattle owner is stealing his own cattle in order to rip off the assurance agency. A magician is showing some tricks when he and his daughter are pulled over for running through a red light. A young girl is trapped in her car when a drunk driver runs her off the road.