Different as a plus and minus, the main characters intersect at first only for work, but soon a warm relationship arises between them. They have a different approach to investigating crimes, but the goal is the same. Sometimes it seems that they cannot exist side by side, but their agency successfully investigates a variety of cases – from spying on an unfaithful husband to solving crimes of national importance.

In the 1970s, a top-secret military experiment conducted by a special unit unleashes vicious piranhas. As these deadly creatures go on a hunting spree, a general and his team must find a way to stop them before they devour everything in their path.

Colonel Mikhail Loginov arrives to take command of a military base in a seaside town, bringing his wife Svetlana with him. Their arrival upsets the peaceful, stable existence of border detachment leader Aleksey Streltsov. Twenty years ago, the very same Svetlana left him without giving any reason. Now Aleksey has a family-his wife Vera and son Danila. But the old wounds inflicted by his first love start bleeding again. And soon, real blood is shed. Vera's father, the former base commander, is found dead, and his murder must not go unpunished.

Rita, a figure skating coach, wants to prevent her school bankruptcy and closing by trying to push the famous millionaire to fall in love with her.

USSR, 1970s. Lena has a real talent for writing - her school essays reflect with incredible precision and warmth not only the world around her and her loved ones, but also her personal experiences, dreams, and hopes. Her mother works in documentary film, and she has her own problems and dreams. It so happened that the daughter's adolescence coincides with her mother's midlife crisis. The story of their touching relationship is told with a kind smile and notes of sadness.

Many myths, stories and traditions are associated with the lime tree, going back to the Middle Ages, Celtic times and as far back as Ancient Greece. In Russia, the story goes, that on discovering his lover's infidelity, landowner Pavel Kazantsev was so heartbroken that he could not forgive Anastasia's disloyalty and buried her alive. He planted a lime tree to mark the spot where she lay, and years later villagers still go to the tree to ask Anastasia for help, particularly in affairs of the heart. Marina is the wife of a successful businessman also coincidentally called Pavel Kazantsev. One day, after a family quarrel, Pavel takes Marina to their country house where she discovers that Oleg has a lover - Anastasia. Marina soon learns about the legend of Anastasia's tree from the local villagers. The coincidence with names is disturbing, but a worse discovery is still to come.

1944. After the hospital or because of problems with vision and speech, several officers are "written off" to a false airfield. The Nazis take this airfield for the real one, and pilot Ivan Polivanov learns about it at the most inopportune moment.

Recently, the beautiful Sasha lost her husband. She is going through his tragic death very hard...

Anastasia and Andrey are colleagues and lovers. The couple does not advertise their relationship, because the man is afraid of missing out on a promising position as head of the department. The girl realized a long time ago that for Andrey there is nothing more important than a career. He will stop at nothing to achieve his goal.