Sergey meets girls at the sea that he, allegedly working in a prestigious profession (he is either a pilot, flying abroad, or an employee of Vneshtorg), easily succeeds. He is interested in a woman sitting alone on the beach with a parrot in a cage. She is not particularly inclined to get acquainted, but eagerly talks about her son - a round honors student who was even shown to a professor from the Novosibirsk Academgorodok. Here, Sergei meets a terribly impudent guy who knows who he actually works.

The widower Choi is impotent. He adopts the infants Mun and Su-ryun and raises them. Mun graduates from college in Seoul but he can’t adjust to Seoul life so he returns to Choi’s home. Mun learns that Su-ryun is not his sister in blood and he falls in love with her.