In the border zone of the Soviet-Polish state border, gangs of the Organization of Ukrainian Nationalists operated. Captain Olkhovik was given the task of infiltrating the OUN gang.

At the southern border outpost the Soviet border guards managed to neutralize a spy from one of the Western intelligence services and discover an electronic unit recording data about secret strategic military facilities located on the territory of the USSR.

From 1917 to the end of the 1980s, Soviet border guards are stationed on the territory of the USSR from the Far East to the western borders.

On instructions from Polish intelligence, a group of bandits dress up in Red Army uniforms and attack a Soviet border town.

The film unfolds on two parallel planes. Scenes depicting the tense, uneasy routine of the border where the young protagonist Ata serves are interwoven with the less dangerous, yet still emotionally charged episodes from the life of the beautiful young Leila, his fiancée, who remains faithful to him despite receiving a proposal from a very successful young graduate student.

A group of saboteurs was sent into Estonia in 1959. This group included a local resident who also has his own personal goal: to find the daughter he lost at the end of the war while fleeing abroad.

The head of the border detachment Gamayun arrives in Turkestan to destroy the last large formation of the Basmachi - the gang of Mumin Bek.

Chekist Olga Anisimova, who infiltrated the White Guard center in Harbin, and border guard Aleksei Mogilov prevent a number of provocations on the Chinese Eastern Railway, uncovering a conspiracy between the White Chinese and the White Guard center in Harbin.

Dong-jin works at the immigration office, detecting illegal immigrants and entrants. He rarely meets his father, who has Alzheimer's disease, and it's awkward for him to meet his brother, Dong-seok, and his family. Nam-il, a colleague, uses his position to commit corruption and the youngest, Eun-seong, is too compassionate. One day, Dong-jin meets an ethnic Korean call girl named Yeon-hwa and starts to like her. She gets a call from a broker that he's withholding her niece, Soon-bok, who escaped from the North. Looking at Yeon-hwa and Soon-bok's sadness and innocent lives, Dong-jin's life begins to change. His father dies and Yeon-hwa kills herself. Dong-jin tries his best to save Soon-bok. He risks everything for her, but his efforts become worthless when Nam-il frames him for his irregularities and Eun-seong betrays him to protect their own family. Dong-jin loses everything and is left only with his search for Soon-bok.

An ambitious young blogger struggles to break free from the fatigue of her hard work ethic, which deprives her of true happiness and the beauty of the world around her.