While on vacation in a rural county, John and Roy help a local sheriff in emergencies and setting up a local emergency medical service.

Dixie stops by Station 51 and Johnny is unable to sell her tickets to the Firemen's Picnic, where the top seller gets a trip to Las Vegas. The firemen respond to a traffic accident that Dr. Brackett is involved in which resulted in one death, for which Brackett blames himself, and he refuses Dixie's requests to rest. When the squad breaks down in an alley, they find themselves in an undercover operation with the police and aid a detective suffering from an angina attack. Later the firemen rescue two victims of a dock fire complicated by a box car full of flammable ammonia.