A prosecutor with a clean record walks into a conspiracy that asks: what if the system itself is the disease? Babylon spends its first half building a noir thriller so methodically intelligent it feels like watching someone solve a puzzle while the puzzle solves them back. Then it fractures. The second half abandons its own philosophical weight and becomes a manga adaptation of itself, which breaks the show it was building, but the damage it did in those first episodes to how you think about power and complicity doesn't undo itself. This is a show that earns its collapse by making you believe it could never collapse.

Zen Seizaki is a diligent prosecutor with the Tokyo District Public Prosecutors Office. He and his assistant, Atsuhiko Fumio, are looking into a pharmaceutical company accused of faking clinical research on a new drug. The file of an anesthesiologist tied to the case, including a page stained with blood and marked with the letter F, leads them to a conspiracy around the mayoral election in Shiniki, a new autonomous zone in western Tokyo. As Seizaki digs deeper, the case grows more tangled, the bodies pile up, and his sense of justice is put to the test. The result is a tense psychological mystery thriller about corruption and deceit.