A student of Indian dialect and a known author in phonetics meet at a street corner. A young, adult woman of a low social class is with them. She has a very thick and almost incomprehensible accent.
Eh be a laley day ain't eh? Would ya mind sparin' a dallar fer a poor gal?
Any idea what she's sayin'?
Liza's father came to see Higgins demanding that he returns his daughter. But what he really wanted was to ask him for money.
The woman, who revealed herself to be names Liza, wanted to learn proper dialect so she could work at a local shop. Higgins, the author, and Pickering, the student, made a bet that he could teach her to speak perfectly within a few months.
After a few months Higgins thought she had made enough progress to take a few trials. First was to introduce her to his mother and test her speech. When they got there they met Eynsford Hills and her kids. All was well, but when they got down to the small talk she showed signs of failure.
HIGGINS: I'll work with her a bit more before the next trial.
Ow ye doin' t'day missas?
PICKERING: Okie Doke.
Freddy, Mrs. Hill's son found Liza attractive. However Mrs. Higgins feels like nothing good will come of this in the end, but Higgins and Pickering don't notice.
That's not good.
Higgins takes Liza to her second trial at a public speaking event (in the play it was a ambassador's ball however that doesn't fit modern society). She does well meaning Higgins has won the bet. But they are now tired of the project.
Liza is now hurt that they would abandon her so quickly after the bet is done. Even though she has improved in speaking she doesn't know what to do now. Higgins suggests she get's married and she leaves in anger.
The next morning Higgins rushes to his mothers house panicked because Liza has run away. With him is her father who is now rather wealthy thanks to Higgins aid.
Eventually Liza appears and thanks Pickering for being nice to her, but threatens Higgins saying that she might go work for his rival. This angers Higgins but makes him admire her in a way. As she leaves he asks her to run a few errands. But now that she has a love interest, Freddy, and can speak much better, she never makes it clear as to whether or not she will return to him.
Higgins' mother reveals that Liza had gone to her house and that she has been there ever since. She scolds Higgins for being so disrespectful and unfair to Liza.