Castle and Beckett investigate the murder of a young mathematician killed with a 200-year-old bullet, this makes Castle's imagination roll giving out some crazy ideas about a time-travel killer.
Kahn and Minh want to escape the redneck nieghbors and decide to make one final attempt at getting into the Nine Rivers Country Club, by having Minh skeet shoot. In order to practice she joins the Arlen Gun Club. After she gets in to Nine Rivers and can no longer shoot at the Gun Club, she starts to feel guilty and Dale and his Gun Club want revenge. Hank is appalled when someone keeps putting their garbage in his cans.moreless
Bobby finally takes a liking to football. Not wanting him to loose interest, Hank and the gang decide to take Bobby to a Texas vs. Nebraska game. While there Bobby wanders into the luxury box of former Nebraska quarterback, Jack Middleton. Eventually Hank and the gang join him. When Hank (acting as Jake) calls a play that wins the game for Nebraska, all the Texas fans are out to get him, and they have to escape, without Bobby knowing what is going on. Peggy and Luanne watch from home, and Luanne gets scared off Peggy's aggressiveness.moreless
Bill has to shape up for an upcoming Army physical, and decides to have a gym in his garage. When he becomes friends with a group of body builders he becomes aggressive and develops a bad attitude. They over work him until he hurts himself, but they refuse to stop.moreless
When Hank and Strickland Propane become the concept of a new video game, he's asked to investigate it, and winds up addicted. Bobby trains for the Presidential Fitness Test.
When Lucky ditches Luanne to go stumping with Hank and the gang, Luanne accepts an invitation to attend Arlen High School's Senior Prom. Lucky's friends Mud Dobber and Elvin take it upon themselves to bully Luanne's 15-year-old date, which leads him to dump Luanne.moreless
When a pet snake that Bobby gets from Lucky goes into the sewer system Hank calls Animal Control. Animal Control decides that this is the best opportunity to get some perks, so they allow everyone to panic, by making the situation seem worse, and not actually making any efforts to stop the snake. Dale, who gets hired by them, decides it's time to take action.moreless