The movie is about what happens to Osman, who manages to get into a mansion as an in-law to get rid of his poverty. Osman is unemployed and penniless. He is engaged to Ayşe, the sister of his friend Mehmet. But they have no money to get married. Ayşe goes to work in Australia to save money. Osman marries the daughter of Dehri Bey, widowed with four children when her husband dies, and settles in Dehri Bey's mansion. Dehri Bey asks Osman to hire a foreign governess to teach his spoiled children to behave. Mehmet secretly writes a letter to Ayşe and invites her to Istanbul to play a trick on Osman, who has forgotten his sister and married. Ayşe enters the mansion as a governess under the name Angel. All the men of the mansion come after Ayşe.
