Chet starts a series of practical jokes against John, who eventually retaliates. A child is trapped in a tree house — and the tree is on fire; the girl’s mother later shows a romantic interest in Johnny. A retiree pretends to be ill so he can amuse the children in the emergency department. A woman feeds her sick husband Dieffenbachia sap to keep him quiet. At a trash fire, a gas station worker shows signs of a perforated ulcer. Responding to a call of a man down, the paramedics find Old Bill collapsed in his home. A young boy swallows ant poison. The firemen extricate three workers from a bulldozer accident.