Stella Kidd returns to Firehouse 51. The team must work together to put out a potassium fire in a tunnel. After that incident, Ritter begins to worry about a young cop who witnessed the fiery death of a truck driver.

Jimmy addresses the U.S. reporting its first case of the flu and coronavirus combination called “flurona,” then catches up with Cate Blanchett and Nate Bargatze before enjoying a performance from musical guest GAYLE.