Although the film is very long, consisting of 4 parts, in terms of content, they are all equally attractive: The plumbers are lucky to have sex with the female landlords. The story takes place at a time when all the main actresses are wearing very sexy pajamas when the plumbers arrive, perhaps this is also the main reason for these clumsy love stories. I thought sexy pajamas were just to make me cooler and more comfortable at home, but no, it was a stimulant for other men to reveal their lewd nature. The plumbers are constantly looking for opportunities to satisfy their bestiality while the female landlords are constantly exposing loopholes, stimulating their curiosity, making them unable to control themselves and going beyond the permissible limits.