Kornilova interviews Drobysh at the hospital. Drobysh realizes that she needs to find someone to blame, and he doesn't turn in Dym‑Dymych. Maya shows up at her uncle's place — General Bakurin's — and demands that he return Viktor to her: something is wrong with her fiancé, and he needs to be pulled out of the unit immediately. Samoyed talks to the headmistress of the orphanage over the phone about adopting Vaska. The headmistress doesn't give a direct answer — Agatha is in her office with her, and she brought many gifts for both the children and the headmistress. Vector sees fragments of Gorynych's flask in Max's locker in the locker room...
 

Max is working part‑time for a commercial fire brigade on the set of a music video for a popular band. After he leaves, the band's leader, Kondrat, suggests to the producer that they put on a real fire show... Drobysh comes to in the hospital. Tina is happy, but Drobysh isn't glad to see her, because he was planning to break up with her. Vector invites Veronica and her son to the music video shoot and promises to introduce them to Kondrat. But when the recording begins and Kondrat turns on the "real" pyrotechnics, the shoot doesn't go according to plan... Maya, who is bored and lonely, agrees to have dinner with Soldatov.

Veronica is forced to take her son with her to work. The neighbor, who usually looks after the boy, is waiting for a guest she met on a dating app. For this occasion, she bought a bottle of liqueur from an acquaintance — he has a whole range of flammable items in his garage, and a spark from a faulty extension cord is enough to set them off... Agata quarrels with her mother‑in‑law and leaves home. Bakurin's car "accidentally" catches up with her. After his shift, Vector trains Ptichka. When Veronica brings her son, he switches to training the boy. Veronika wants to learn more about Vector from Birdie.

The weather is dry and hot, and the red level of fire hazard has been declared. Max's unit is heading out to assist their colleagues in the region. The shift begins without any incidents. But then the smell of burning reaches them — a danger threatens the dacha settlement... Borka's father escapes from the colony and suggests to his son that they take a stroll around evening Moscow. Right in front of his son, he steals a car, then breaks into a shop, takes money from the cash register, and, to cover up the crime, sets the place on fire. Borka tries to put out the fire and runs away at the last moment — the police officer ends up with the boy's hoodie, which Dym‑Dymych recognizes. He doesn't turn the boy in, but he tells Cheremis about it. Cheremis realizes that Borka needs help...

Three teenagers — Garik, Nastya, and Danya — open a car‑sharing car using someone else's account. Nastya suggests going to the city. Danya speeds up, loses control, and they get into a serious accident — the guys fly out through the windshield, and Nastya ends up trapped inside the car. On top of that, fuel is leaking from under the car...

The firefighters remember their colleague. General Bakurin arrives and expresses his condolences to Cheremis. Vector is in turmoil, and Bakurin calms him down. Vector believes he can resign and transfer to the State Fire Supervision service. The fire station is faced with the question of staffing the Jaeger unit. Dym‑Dymych is appointed as the unit's commander. His joy and self‑confidence nearly lead to a tragedy in the Chinese dormitory. Cheremis discovers flowers for Agatha from the general at the apartment door and has a stern conversation with Bakurin. In response, Bakurin cancels the transfer to Vector from the part...

The Gamekeeper's unit is dispatched to extinguish a garbage container fire. The boy Borka is watching the firefighters at work. The gamekeeper calls him over to "help" and even lets him hold the fire hose. No sooner has the vehicle driven away than a new call comes in — there's another garbage container fire in the neighboring yard. And once again, Borka is hanging around nearby... Another trip to a serious fire ends in tragedy: upon examination, the body of the owner is found in the depths of the burned‑out warehouse. Vector finds a distinctive, charred lighter in the warehouse. Max recognizes her; he gave it to the Huntsman. On the next shift, the Huntsman doesn't show up — the sauna at his dacha is on fire...

Firefighters bring toys from the warehouse to the orphanage. Maya shoots a report about it. The Samoyed meets a foster child named Vaska. Vector and Maya go to their parents' house, and Maya's relatives also gather there, including her uncle, a high‑ranking general in the fire service. At the festive table, Maya accidentally lets slip that she's dissatisfied with Viktor's work — instead of doing office work, he's putting out fires. Vector and Maya quarrel. At the scene of the car accident, Vector is tasked with cleaning up the spilled fuel from the road surface. A car is heading towards him at high speed — it hits one of the drivers and hits Vector. Max is not ready to let the hit-and-run go unpunished.

Inspector Kuznetsov suspects that the warehouse with toys was set on fire, but someone took the fuse bulb. It turns out that recently there have been several arson attacks with a characteristic signature. Max and the Gamekeeper, thinking that this was the work of one person, nicknamed the arsonist Gorynych. The popular blogger Soldatov, who saw firefighters taking toys from the warehouse, publishes an unflattering report. Vector comes up with a way to clear the team's reputation. Meanwhile, passions are flaring up at the pre‑wedding bachelorette party in the nightclub...

A trainee, Viktor Zhuravlev, joins the fire station, and the head of the fire station, Cheremis, assigns him to the department of Maxim Knyazev. The new recruit isn't taken on the first call. An emergency occurs there — firefighter Drobysh, while inspecting the building after the work is completed, falls into the basement and finds himself in a fiery trap. Knyazev blames his partner, Dim Dimych, for what happened. Drobysh is admitted to the intensive care unit in a serious condition. Zhuravlev goes with the team to his first fire — a toy warehouse is on fire — and there he earns the nickname "Vector." Investigator Kornilova from the Investigative Committee arrives to investigate what happened to Drobysh. She doesn't believe the team's testimony, which is identical in every detail...