Episode 2 of "Lead Children" commences with Jola visiting Professor Berger's clinic, requesting her to investigate the children afflicted with lead poisoning. She urges Berger to administer an advanced medication to the affected children. However, Professor Berger disregards Jola's advice and asks her to leave. Nevertheless, she requests her nurse to administer the medication recommended by Jola and conduct urine tests on the children. As Jola exits the clinic, she collapses.
A documentary about Silesia and the houses constructed around metal factories and coal mines in Targowisko is shown. The narrator attempts to portray life in Silesia in a positive light while ignoring the detrimental effects of coal mining on the children.
Upon waking up, Jola returns to her clinic and encounters Wiesia, informing her about the lead poisoning epidemic caused by the metal works. Wiesia believes that the metal works are essential for the people of Silesia to earn a living, whereas Jola argues that the pollution caused by the metal works is doing more harm than good.
Jola visits the Szopienice Metal Works factory and attempts to speak with the social affairs manager. The guard refuses to let her talk to them without written consent. Jola demands to speak with the manager at the earliest, threatening to expose the truth about the lead poisoning.
At the same time, Professor Berger meets with the Governor to inform him about the lead poisoning epidemic and claims that she needs to test at least 100 children. The Governor expresses concern that these tests will divert attention away from Comrade Brezhnev's visit, but agrees that the issue is concerning and blames it on the metal works.
The following day, Jola arrives at the clinic to find it eerily empty of patients. Her nurses reveal that the locals have taken to calling her a 'nutcase', a result of her accusations against the metalworks. Professor Berger, appearing just then, confirms Jola's suspicions that the children are indeed suffering from lead poisoning. Jola pleads with the professor to examine Karol's case, and together, they discuss how the public pools and the smelter are exacerbating the epidemic. Berger reveals that they must tread carefully in their testing of the children, fearing the political repercussions it could cause.
The social affairs manager from the metalworks, Mr. Mycka, meets with the Comrade Secretary to inform him of Jola's visit. The Comrade Secretary orders Mycka to transfer Jola to a different district. The Health Department Director summons Jola for a meeting, but before that, Jola heads to Targowisko to administer medication to the children and collect their urine samples.
Her efforts meet with mixed reactions from the parents; some push her away, while others allow her to tend to their children. She then visits the local church and meets with the priest. She speaks with him about Antek, a young boy who recently died after coughing up blood. The priest shows Jola the robe Antek was wearing when he collapsed and recalls that no autopsy was conducted. He leads her to the graveyard, shocking her with the number of children's graves in Targowisko.
The Comrade Secretary meets Niedziela over lunch. They discuss Jola's transfer, but Niedziela claims that he can help them. He suggests letting Jola investigate the metal works, as this would help them overthrow the Governor, and asks the Comrade Secretary to let him deal with Jola.
Meanwhile, Jola meets Professor Berger and talks about using the lead poisoning case for her doctoral thesis. At home, Jola refuses to let Joasia go to the local pool as she goes to meet the Health Department Director. The director, Marek Klepacz, reveals that Jola was offered a position in a new clinic in Koszutka, but Jola refuses to sign any papers without consulting her husband.
On her way out of the Health Department, Jola runs into Niedziela. Niedziela tells Jola that he works for the Security Service and asks her to continue investigating the lead poisoning cases, offering to help protect her from being arrested by the militia.
Niedziela gets back home and finds his son, Marek, rushing to the pool to see Joasia. Jola's mother gives her an earful for missing dinner, as she stayed back at work until late that night. Joasia sneaks out and goes to the pool with Marek.
That night, Jola tells Zbyszek about the offer from the health department. He asks her to consider the position, claiming that Koszutka was a much better district for her doctorate. Zbyszek also tells Jola that Joasia often sneaks out of the house to go to the pool at night. Jola goes to the pool to find Joasia kissing Marek in the pool, naked.
Jola takes Joasia back home, asking her to be more careful in the future. Meanwhile, Niedziela is hooking up with the Governor's secretary. She tells him about the conversation between the Governor and Professor Berger. Based on that information, Niedziela makes a call.
The next day, Jola learns that the urine samples sent in for testing had been contaminated. She also learns that the Sanitary Inspectorate will not be sending any more drugs to her clinic due to a shortage. Jola is upset by this and goes to Targowisko to administer what is left of the drugs to the children. On her way back, some drunk men chase after Jola and attack her.
Niedziela shows up just in time and saves her, taking her home. On the car ride, Jola tells Niedziela that she would much rather quit than endure what the men of Targowisko had done to her. Niedziela asks her to think about the kids.
Jola takes the urine samples she collected to her friend Adam's clinic and adds her own sample to the lot. Adam reveals that all 13 urine samples of the Targowisko children showed lead poisoning. Jola's urine sample has detected that she is pregnant, leaving her shocked.
