Joel Fleischman is devastated to receive a letter extending his service in Alaska by another year, leading to a childish rant where he compares himself to a persecuted prisoner.
Though the episode is titled "Thanksgiving," the series name itself matches your topic. In this episode, the town of Cicely, Alaska, celebrates Thanksgiving with a unique tradition that includes throwing tomatoes at white people to symbolize historical grievances. [S4E8] Exposure
Remi faces literal physical to ZIP poisoning, which is rapidly deteriorating her mental state and causing hallucinations of her dead brother, Roman. Chicago Fire (S4E8): "When Tortoises Fly"
This episode features a massive of secrets. Kurt Weller finally reveals the truth about Jane/Remi to Patterson and Rich Dotcom.
A lighter "feature" involves the station's rescue of a tortoise, which they nickname Leonardo (later revealed to be named Donatello). Joel Fleischman is devastated to receive a letter