The initial principal cast consisted of Oksana Avram, Bohdan Sheludiak, Karina Havryliuk, Oleksandr Ozolin and Albina Pererva, until the former four actors departed in 2017.

In 2018, Alina London, Anastasiia Durkot, Maksym Sosnovskyi, Yaroslava Zhytomirska, Semen Tereshchenko, and Polina Kovalevska joined the cast.

These group tempt to commit unfaithful relationships, typically engaged in extramarital or adulterous activities, betraying their lovers, results in perpetual turmoil and mess.

Kyiv Day and Night is strongly censored for having sexually aggressive content, via using nudity, offensive words and unsimulated sex, though those elements were concealed by fog and bleeps over the mouth.

Kyiv Day and Night received negative reception from both critics and aggregate websites for its depiction of primarily sexually violent scenes and debauchery, making it least rated television show.

The director of the four seasons Kseniia Buhrimova expressed her approval stating "Our heroes are not stars, they are the guys from the next doorway, who prove: no matter what trouble happens to you, you are not alone.

"[9] According to the channel's head of press service, Svitlana Tsybanova said they were working to broadcast 7 I Roses on behalf of a similar reality television series.

Kyiv Day and Night somewhat said to be reminiscent of the Russian television show Dom-2, despite Dom-2 being quietly different in terms of sexuality and taboo subjects.

[13]Soundtrack production for Kyiv Day and Night was commenced prior its release around 2015, while some are independently taken from several Ukrainian artists, such as Bahroma, Onuka, and O.Torvald.

The series main theme soundtrack "Киев Днем и Ночью" was performed by Ukrainian band O.Torvald and premiered as their single on February 14, 2016.

Inspired by punk rock, the music video was released on May 4, 2016, and depicts the band singing in a film studio.

The band frontman Yevhen kisses a girl (portrayed by Taisiia-Oksana Shchuruk) inside the car and exits.

It also empowered with liberty, arrogance, excessively proud contempt towards her friends as described in the first verse: "I don't need your caresses, I know for sure there is no love.

When she shouts, the party-goers pauses, and she begins roaming and destroying objects including breaking wine glass, spilling water to Bohdan's face and wearing a cone to Oksana's head.

I have loved hip-hop since childhood and the music written by our friend, the soloist of the band Cardiomashine Max Lysenko.

A group of four young friends — Karina, Albina, Bohdan and Sasha (Oleksandr) — rent an apartment which they call "Quartero" on the twenty-fourth floor of a building.

Bohdan, a photographer, and Karina, a singer, dwell in one room, where they live as a couple, whereas Albina and Sasha are lodged separately.

Oksana leaves him and meets with Pasha (Pavlo), who is employed as mechanic in a garage owned by a mogul named Andrii.

At the beginning of season 4, Nastia (Anastasiia), a sexually abused girl escapes from a wedding as a result of her final decision of forced marriage and joins the group, from whom Bohdan starts a romantic relation.

Distressed Nastia then decided to move out Kyiv after her sister's incarceration in a psychiatric hospital, where she quits the city to begin a new life in the last episode.

In the final episode, after some awaiting, Bohdan, who has a blackout due to intoxication, explains to Sasha that he really cares about his child and respects his friends and Oksana.

Bohdan affirms his interest in his baby, and the story concluded with the couples kissing each other as firecrackers sparked in sky, and wedding attendee surrounded them.

By default, Andrii thought that Yana made extramarital relation and breaks silence, but they become reconciled eventually.

Recognizing the past family tussle, Rita and Khrystyna departed from their parent house and exit their hometown to live together.

In season 4, a bride named Nastia accidentally intercepts the group's share taxi when she seeks hideout to avoid marrying her bridegroom, who sexually abused her.

Soon after their dating, Alina stabbed and kidnapped him and gagged to log cabin, and cut Nastia's wrist with knife and rendered unconsciousness.

She intended the scheme for pretending Artur as a killer of Nastia and to avoid further scrutiny that indicates her connection with the attempted murder.

In episode 45, Alina stabbed Epifanio's shoulder while she kisses him, and saved by Nastia and Bohdan as Pasha calls for emergency help.

The plot revolves around a group of five people, finding themselves in an unpredictable mess due to romantic, financial and friendship problems.

Many critics disapproved the series due to the presence of sexually violated scenes, nudity and presenting sex and drugs themes.