A shocking murder takes place at a luxurious party, leaving everyone present in disbelief, but the identity of the perpetrator and victim remains unknown. Four witnesses in the police station recount the events that led to the crime.

While the police discovers the true nature of the cunning and manipulative Marta, the jealous Paula suspects that Toma is having an affair. Olga, who is unaware of the intrigue around her, awakens memories of the old neighborhood, which she now observes with nostalgia. At the same time, she reveals painful memories, a secret that marked her life. In the meantime, Simun tries to solve the financial problems that burden him in the company, while Ana, is faced with her own suspicions in her own husband, she discovers a potential affair, and all the clues lead to Marta's involvement.

While four friends are preparing to go to a party at Marta's house, the past seems to return and the events of that fateful day in 2004 are revealed. Namely, young Olga's world collapsed at the moment when her friends turned their backs on her and showed all their cruelty. As the present mixes with the past, Ana uncovers suspicious clues that lead to one of her friends and exposes her as Mato's mistress, leading to a dramatic confrontation.

At a lavish party, Marta and Olga argue about the opening of the swimming pool in the sports center, while Ana learns that the sweater she found in Mato's car doesn't belong to her friend after all. Olga runs into Simun's car, and the chemistry between them is getting more and more intense. Marta whispers to Paula about the relationship between Olga and Tomo, and Paula tells the real estate agent Tena that someone in the street is disturbing the whole neighborhood. by making a noise. Obviously disturbed Ana asks for Paula's advice regarding her husband.

Šimun's problems at work are increasing, and his situation is not made any easier by Marta's brother Robert, who does not take his responsibilities in the company seriously. Šimun has a panic attack, and Olga helps him. The two get closer and closer, but when Olga accidentally discovers a secret about SŠimun that changes everything. Ana is desperately trying to find evidence that Mate is cheating on her.

Marta shows up in Olga's office, secretly "leaving" a present for Olga, a necklace that Tomo once gave her. Ana discovers Mato's secret phone and finds the evidence of him cheating with Blanka. Marta manipulates Ana's birthday party by the pool. Ana is forced to pretend, up until she sees her husband's mistress walking in. Paula's jealousy reaches the new level, when she sees Tomo and Olga talking- she loses her cool and throws Olga into the pool, which leaves Marta gloating. The next day- Tomo seeks Olga, when Olga discovers a set up involving a necklace. Olga masters a revenge plan.

Blanka comes to Mate to confront him about the speech at Ana's birthday party. Olga concocts a plan to punish Marta for the prank with a necklace. Ana confronts Mate with a truth and tells him that she wants to separate peacefully and that they should both agree on a divorce and how they will divide the assets. Šimun seeks Olga at home and stays for a dinner, which Marta is unaware of. Olga questions Edo about a perfect murder.

Olga calls Paula, Ana and Marta for a breakfast, they all try to comfort Ana because of the situation with Mato. Mato is moving out of the house. At the dinner party thrown by Marta, Paula, Marta, Simun and Tomo discuss on the situation with Ana and Mato, where Marta slips out that she has known about Mato's infidelity for years. Olga finally persuades Simun to see the doctor. In the company Simun orders all the computers to be confiscated in order to find a mole.

Blanka appears in Ana's house, threatening her. Simun pulls a plant from Marta's garden and gifts it to Olga. Marta is convinced that Olga had poisoned her with a pesticide and freaks out, during a panic attack, she goes to the hospital to save her life. The doctor convinces her that she has nothing to worry about, but realizes that Olga tried to scare her, anyway. She forms another manipulative plan, while Olga and Simun are growing more closer.