Paris 36 starts with confession by the protagonist Pigoil(Gérard Jugnot) to a police officer, accused of murder. It turns to a flashback to the year 1936 depicting the unstable district in a Paris faubourg, suffered from depression and the rising pool of involuntary unemployment. Pigoil has lost his lifetime job in a liquidated musical hall and his wife runs off with another man. More miserably, Pigoil cannot keep the custody of his beloved son- JoJo(Maxence Perrin) because of his financial inability. Struggling to hold on, the trio of experienced stagehands- Pigoil, with Milou (Clovis Cornillac) and Jacky (Kad Merad) decide to take over the vacant musical hall, named as Faubourg 36, and produce some sorts of hit musicals. With the arrival of a young talented actress, Douce (Nora Arnezeder), the musical hall is a huge success and Pigoil can share the happiness with JoJo again. During the time, the hostile landowner Galapiat (Bernard-Pierre Donnadieu) ,who is fascinated with Douce, always wants to clutch her. When he later discovers that Douce is in love with Milou, he sends the gang to have Milou killed but they are in a mistaken notion and wrongly kill Jacky. Shortly thereafter, Milou argue with Galapiat face-to-face and Pigoil finally shoots Galapiat to save Milou. That is the confession and Pigoil is hauled off to 10-year jail. The film ends with a cheerless scene of Pigoil's returning to the town after 10 years, yet a delightful projection for JoJo's success as a professional accordionist performing in Faubourg 36.