Randy Marsh is arrested for drinking while driving and is court ordered to attend the Alcoholics Anonymous support group for two weeks. The other members convince him he has a disease, which then causes him to believe his alcoholism is a terminal illness. He begins using a wheelchair and uses his new disease as an excuse for his alcohol abuse.
Each meeting consists of alcoholics relating tragic stories caused by their addiction. They adhere to a notion of the alcoholic being powerless to cure himself, and the only way is through the acceptance of a "higher power". The group uses a twelve step system of support to become alcohol and substance abuse free.