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“Michael extricates himself when a technical problem forces the cast to perform live, by improvising a revelation about Emily: that she is actually Edward, Emily's twin brother who took her place to avenge her. This allows everybody a way out.”
Plot
Michael Dorsey is a respected actor, but nobody in New York City wants to hire him because he is a perfectionist and difficult to work with. He makes ends meet by working as a server in a restaurant and teaching acting classes. After many months without an acting job, Michael hears of an opening on the popular daytime soap opera Southwest General from his friend and acting student Sandy Lester, who tries out unsuccessfully for the role of hospital administrator Emily Kimberly. In desperation, and following an argument with his agent, Michael disguises himself as a woman, gives his name as "Dorothy Michaels" at the audition, and gets the hospital administrator part. Michael takes the job as a way to raise $8,000 to produce a play by his roommate Jeff Slater, which will star himself and Sandy. As "Dorothy", Michael plays Emily Kimberly as a plausible feminist, which surprises the other actors and the crew, who expected the performance to be mild-mannered rather than the empowered "Gloria Steinem type" suggested in the script. His character quickly becomes a national sensation.
When Sandy catches Michael in her bedroom half undressed because he wants to try on her clothes for ideas for Dorothy's wardrobe, he covers up by claiming he wants to have sex with her. Sandy is receptive and they sleep together. Exacerbating matters further, he is attracted to one of his co-stars, Julie Nichols, a single mother with a daughter from a previous relationship and in an unhealthy relationship with the show's amoral, sexist director, Ron Carlisle. At a party, when Michael (as himself) approaches Julie with a pick-up line to which she had previously told Dorothy she would be receptive, she throws a drink in his face. Later, as Dorothy, when he makes tentative advances, Julie—having just ended her relationship with Ron per Dorothy's advice—makes it known that she is not a lesbian.
Meanwhile, Dorothy has her own admirers to contend with: older cast member John Van Horn and Julie's widowed father, Les. Les proposes marriage, insisting that Dorothy think about it before answering. When Michael returns home, he finds John, who almost forces himself on Dorothy until Jeff walks in on them. A few minutes later, Sandy arrives, asking why he has not answered her calls. Michael admits he is in love with another woman, and Sandy screams and breaks up with him.
The tipping point comes when, due to Dorothy's popularity, the show's producers want to extend her contract for another year. Michael extricates himself when a technical problem forces the cast to perform live, by improvising a revelation about Emily: that she is actually Edward, Emily's twin brother who took her place to avenge her. This allows everybody a way out, but Julie is so outraged at Michael's deception that she punches him in the stomach once the cameras have stopped rolling and storms off.
Some weeks later, Michael is moving forward with producing Jeff's play. He returns Les's engagement ring, and Les says, "The only reason you're still living is because I never kissed you." Despite his anger, Les admits that Michael was good company as Dorothy, and Michael buys him a beer.
Michael later waits for Julie outside the studio. She is reluctant to talk to him, but he tells her that he and her father played pool and had a good time. She finally admits she misses Dorothy. Michael tells her Dorothy is within him and he misses her too, adding, "I was a better man with you as a woman than I ever was with a woman as a man." Julie forgives him and they walk away together, engaged in conversation.
