Sgt. Alvinia Plout has gone AWOL. A General she loved broke her heart. She hides at the girl's place and takes a job as a lounge singer. All while MPs trail her. The girls must think fast to save their former Sarge from a court-martial.

Carmine and Shirley perform a beautiful duet at Cowboy Bill's. Laverne too, wants to sing as pretty a song as they did. Carmine gives her voice lessons and Lenny also tries to help, but it just may be Squiggy has the real answer for her.