So Long, Stooge

Lambert is a lonely night shift worker at a Paris gas station. One night, Youssef Bensoussan enters the shop to restock with an accomplice while avoiding a police patrol. The two men hit it off and start meeting regularly at the station.

Bensoussan begins a relationship with Lola, a punk woman. To impress her, he borrows Rachid's motorbike, the gang leader who sells him drugs. Rachid's men beat him as punishment for the theft.

One night Bensoussan's merchandise is stolen, leaving him in debt to Rachid. Lambert offers to help him pay off the debt so he can stay in the clear. This marks a shift from casual acquaintance to protective alliance.

Bensoussan returns crying for help; Lambert promises to assist, but Rachid's men ambush him and murder him while Lambert watches powerless. The killing becomes a turning point that pushes Lambert toward vengeance.

Devastated, Lambert takes a leave from work to pursue vengeance full time. Detective Bauer visits and mentions that Lambert was once a police officer, complicating his sense of guilt and purpose. The idea of a personal crusade begins to take shape.

Lambert asks Lola for help; though reluctant, she agrees to assist in finding Mahmoud, one of the murderers. They locate Mahmoud, and Lambert shoots him dead. Lola, though shocked, decides to follow Lambert.

The attendant replacing Lambert at the station is mistaken for him and murdered, signaling that Lambert has become a target. He realizes he is now identified as Mahmoud's killer. This heightens the danger he faces.

Lambert ambushes Rachid outside his bar and shoots him dead, avenging Bensoussan's murder. The act confirms Lambert has crossed into a life of retribution. Lola remains with him after witnessing the violence.

Bauer suspects Lambert of the killings. Lola provides him with an alibi, shielding Lambert from arrest for the moment. The dynamic between them grows more complicated as police scrutiny intensifies.

Lambert infiltrates Sylvio's home, holds him at gunpoint, and demands information. Sylvio pleads for mercy, and Lambert ultimately decides not to kill him. This moment shows a restrained side of his vigilante mission.

Lambert returns home and opens up to Lola about his past as a police officer. He explains that he locked his drug-addicted son in their apartment to force withdrawal; the son escaped and later died of an overdose. The confession deepens Lola's understanding of his drive.

Lambert and Lola prepare to flee the city. While waiting for Lola outside the building, Lambert is shot twice and falls. Lola rushes to him, grabs his gun, and fires at unseen assailants, ending the timeline on a note of danger and uncertainty.