Charlie stores his speedboat he's trying to sell at the station; the firemen decide to chip in to buy it. Roy & John are medi-vac'd via Coast Guard helicopter to rescue two boaters from Catalina Island. The firemen help a bookie who is having a heart attack trying to answer dozens of ringing phones, before Dr. Brackett and Dixie treat him, later a lab explosion of Sodium azide starts a fire at Rampart, injuring several people, including Dixie, who burns herself.

Capt. Stanley is worried his Chief's exam will be sabotaged by the current Chief, who has a past beef with Stanley. A soap opera doctor has real mono and causes drama both on-set with John and Roy, and at Rampart with Dixie and Dr. Early. Also, Dr. Brackett observes from Dixie that the producer is filming a hospital room with an ill patient, Brackett confronts with producer, before he seriously asks everyone to leave. John and Roy are stuck in an elevator with a retired doctor who has a self-diagnosed (and correct, as it turned out) aortic aneurysm.