The 4077th Mobile Army Surgical Hospital is stuck in the middle of the Korean war. With little help from the circumstances they find themselves in, they are forced to make their own fun. Fond of practical jokes and revenge, the doctors, nurses, administrators, and soldiers often find ways of making wartime life bearable.
B.J. falls off the fidelity wagon while trying to provide consolation to a nurse whose marriage has just ended. But will he confess his infidelity to his wife?