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He, Doctor of Philosophy Alois Pech, is his mother's impenetrable and unindependent pet who works as a prison librarian. She, Marcela Johnová, is a self-confident, energetic and successful girl from high society. While she lives in the big world, surrounded by luxury and admirers, he lives a quiet, modest life with his caring mother. They are introduced by a completely random night-time phone call made from Marcella's apartment by one of her guests. Although for her the pleasantly clumsy man is primarily an entertaining addition to a life full of pleasures, Alois falls in love with the girl and begins to look for opportunities to meet again.