The station (except Roy) is entering the firefighters's barbershop quartet contest. Johnny clarifies his situation with Dixie, when his problem is actually with Roy, who says it takes a lot of work, whom they will all side with him. In between practices, the firemen have to render almost-constant assistance to a man who is trying various ways to exercise while on a crash diet, and a woman OD's on sleeping pills.

Roy and John finally get their old fire engine restored to ride in the California Firefighters Parade. The paramedics try to stop a man from driving with heart problems and cause an accident which kills him; the woman he hit blames herself for his death. Dixie and Dr. Early assists a man having a seizure resulting from hypertension in the ER, while Roy and John help a man having trouble breathing while on a date; he accidentally drank a Mickey meant for his date. Two divorced parents fight over their child's medical condition; this leads Dr. Brackett to seek help from them. Dixie takes care of the child's wrist. En route to the parade, John and Roy notice a fire and are the first responders, in the old fire engine.