The factory owner's son Oldřich missed his own wedding. He overdid his bachelor party and spent the night before the wedding in Mr. Šourek's carriage, who asked him in vain for his address. In the morning, the cabman went to the police for advice, but the passenger woke up and drove away with his carriage. He headed for his bride, but she was offended and threw him out. Oldřich also became hardened and declared that he would marry the first girl he met. The further development of events was ensured by Šourek's horse Karel, when he headed home, bringing Boženka, his master's daughter, to Oldřich's path. But she was not interested in the spoiled young man either. So Oldřich bet with her father that he would work hard for a month. If he won, he would win Boženka's hand, the cab, and the faithful Karel...