Teacher Mikuláš Mysliveček has a considerably small salary at the music school. However, he also has a dominant fiancée, Simona, who is also a teacher and desperately longs for marriage. He also has an old eccentric father in a retirement home whom he still has to take care of. And last but not least, he owns a large dog which is a source of his constant mishaps and troubles. Mikuláš's good friend, bartender Viktor, advises him to make extra money as a paid companion (but not a gigolo), which means accepting an agency's offer to entertain and delight lonely ladies (without sex, of course). The shy teacher thus meets the bank director, the charming engineer Jiřina Suková, a divorced and emancipated woman with a seven-year-old son...