The firefighters rescue an elderly man from his burning house. Chet is determined to exterminate an uninvited guest in the station. A man is continually going into cardiac arrest and the doctors try to find a reason. An elderly woman is brought in with breathing problems, and Dixie comforts her worried husband. Roy and John help break up a barfight, then join several fire companies in putting out a blaze caused by a jet fighter crashing into an apartment house; John is injured in an explosion and one of the Pasadena firefighters goes in to rescue him.