A Missouri thunderstorm leads Alma to practice her role as the hospital Civil Defense officer, the doctors to take refuge at a supply room poker game, and a mental patient to lock himself in the hospital fallout shelter after mistaking the storm for nuclear war.

Attempts at weekend romances are interrupted when the Potters' car breaks down and Wainwright revokes passes for the psychiatric ward. Elsewhere, the Klinger baby is christened and named.

Klinger runs a hospital lottery, but trouble ensues when Soon-Lee has the winning ticket. Meanwhile, Dr. Boyer is laid up with a staph infection, bringing his anger and bad attitude to the post-op ward.

The Klinger baby causes friction between Mr. and Mrs. Potter, while Klinger tries to get mental disability from the VA and Dudziak tries to convince Boyer to attend group therapy. Meanwhile, Dr. Andy Caldwell arrives at the hospital for an internship.

Dr. Potter writes to Dr. Sidney Freeman about recent events at the hospital, including news of the hospital's brand new psychiatrist, Dr. Lenore Dudziak, who has arrived to perform Klinger's psychological evaluation. Meanwhile, Boyer flirts with Dudziak, Potter tries to connect with a silent patient, and Wainwright decides to serve deluxe meals in the cafeteria to prevent malcontent from the patients.

Max Klinger's trial finally takes place, with the result of Klinger being found not guilty by reason of insanity. Klinger is also ordered to undergo a psychiatric evaluation at General General. Meanwhile, at the hospital, Mr. Wainwright forces Dr. Boyer into performing a difficult operation. Edward Winter reprises his M*A*S*H role of Colonel Flagg to testify against Klinger.

Potter tries to deal with the overbearing Alma Cox, Boyer beds the wife of a patient, and Klinger is finally arrested.

Wally Wainwright arrives and immediately runs into Klinger, who is still on the run from the law. After introducing himself as Dr. Habibi, Klinger is asked to show Mr. Wainwright around. Meanwhile, Alma is demoted to Potter's clerk and Boyer tries to prove himself to Wainwright, despite his prosthetic leg.

While Soon-Lee is being rushed to the delivery room, Klinger stands in a jail cell worried about his wife, and later conspires with another inmate in order to make his escape. Meanwhile, V.A. Administrator Burt Philbrick tours the hospital, later informing Dr. Potter that Mr. D'Angelo has been replaced. Soon-Lee gives birth to her son, with Max at her side, after he tells everyone he is going to hide out at the hospital.