In the opening episode of Emergency!'s fifth season, paramedic John Gage (Randolph Mantooth) falls in love with stewardess Sue Hickman (Gretchen Corbett), whom he meets during a flight in which another passenger has a heart attack. Alas, the couple is thereafter kept apart by Sue's out-of-town flights and John's emergency calls as a member of LA County's Squad 51. In other developments, the emergency team rushes to a chemical fire, and tends to an injured motorcyclist.