Lieutenant Frank Drebin is a clumsy police detective of Police Squad, a division of the Los Angeles Police Department. Frank returns home to L.A from a vacation in Beirut, when his partner and best friend, Detective Nordberg is gunned down in a undercover operation. Frank’s investigation into Nordberg’s attempted murder leads Frank to become suspicious of well-respected businessman Vincent Ludwig and discovers Vincent Ludwig plans to brainwash a baseball player with mind control device, and assassinate Queen Elizabeth who is visiting L.A. on her American tour.