Barney and Phyllis are the best 2 correctional officers in the state of Texas. They are guarding the wall so that no one goes over it. Earlier in the day they caught a notoriously dangerous fish named Fred. Fred tried to climb over the wall but he was caught and shot. Fred had developed his attempt to escape because of a sight he witnessed earlier. Phyllis kidnapped Fred's friends and turned them into tuna fish.
The leader fish named Sharkie is still alive and trying to create a plan to get over the wall, so he may rejoin his family school of fish. With Fred and his friend getting caught then shot, he has to be extra careful in his trial and error method.
While Barney and Phyllis were distracted by Fred's diversion, Sharkie seized the moment and flew over the wall. We forgot to tell you, Sharkie is a flying fish. Sharkie starts looking for his mother, father, and homeschool of fish, and he starts to think he's home free, until he is caught by Barry the Barracuda. ]