When a secret gunsight is stolen, Bill asks Ralph for help in solving the case. However, Ralph runs into problems when he keeps turning invisible unexpectedly, and must deal with the pressure of meeting Pam's parents.

Ralph and Bill must stop World War III by defusing a corrupt military leader's plans to launch a suprise missile attack against Russia.

Ralph's students start a band, and a promoter lands them a spot on a big ticket concert while trying to get Pam to go out with him.

A psycho military cult leader tries to spread the small-pox virus.