The series centres around the investigations of Police Lieutenant Sławomir Borewicz. Each episode features a different case being solved by Borewicz.

A young academy soldier, Maciek Chelmicki, is ordered to shoot the secretary of the KW PPR. A coincidence causes him to kill someone else. Meeting face to face with his victim, he gets a shock. He faces the necessity of repeating the assassination. He meets Krystyna, a girl working as a barmaid in the restaurant of the "Monopol" hotel. His affection for her makes him even more aware of the senselessness of killing at the end of the war. Loyalty to the oath he took, and thus the obligation to obey the order, tips the scales.

Set in the 19th century Warsaw. The indolence of aristocrats who, secure with their pensions, are too lazy to undertake new business risks, frustrates Wokulski. His ability to make money is respected but his lack of family and social rank is condescended to. Because of his "help" (in secret) to "the doll's" impecunious but influential father, the girl becomes aware of his affection.

A chance meeting at a dinner table reveals the culprit of an old thought-to-be-solved murder.

Zbigniew Gąsior, a thirty year old singer, is a youth idol. Despite fame, money and success with women he can't neglect the emptiness in his life.