Keep an Eye Out

During the opening credits, a man in bathing trunks leads a classical music orchestra in a clearing. He runs away when the gendarmes arrive.

The man in his underwear is taken to the police station. He will not be seen again. In a large office, Commissaire Buron speaks on the phone trying to arrange an appointment with his interlocutor. He hangs up and continues the interrogation of the man who sits facing him, named Fugain, without allowing him to take a break to eat. Fugain discovered a man bathed in his blood in front of his house; he searched the pockets of the corpse before calling for help, which surprises the commissaire who insists on resuming the interrogation.

Buron goes out for a few moments to talk with his son and takes the opportunity to eat a hot dog. Meanwhile, Philippe, a beginner one-eyed policeman, is in charge of watching Fugain. Philippe agrees to initiate the conversation and wants to show Fugain his police badge. He tripped on an open drawer and fell dead, his only eye pierced by a school square that he held in his hand. Fugain, panicked, hides the body in a closet and quickly wipes away the traces of blood.

Buron comes back and continues the interrogation. Watching the closet, Fugain tells him the reasons why he left his home seven times during the night before discovering the body in the street. Buron listens to him while smoking. As smoke comes out of his right flank, he explains that he has a hole in his chest. He gave Fugain an oyster that a colleague had brought him; having never eaten an oyster before, Fugain crunched the shell instead of swallowing it.

Memories mingle with reality: Fugain sees Philippe appear in his memories and interact with him. Later, Fugain complains of being hungry, also when Buron tells him that he too was very hungry, when his helicopter had an accident on a deserted island, Fugain sees the image of Buron on the beach. Likewise Buron enters those of Fugain and appears in his apartment, noticing the strange resemblance between the neighbor spy of Fugain and one of his colleagues.

Meanwhile, Philippe's wife announces that she is pregnant and is looking for her husband; Fugain lies and says that he left because of a stomach ache. She too enters into Fugain's memories, and ends up giving his habit of punctuating his sentences with «That's why» to Buron and Fugain.

Champonin, a colleague of Buron, brings the forensic report: the man found dead by Fugain was victim of a digestive hemorrhage. It's an accident and Fugain expects to be released. Before leaving the room, Champonin finds an eye on the ground and deduces that it is Philippe's.

Fugain tries to explain himself but at the same time, the curtain opens: the police station is in fact the stage of a theater. The audience applauds standing and the characters greet. They're actors, except Fugain thought he was a real murder suspect. They go to dinner together in a brewery, evoking their acting and the first reviews that fall.

On leaving the restaurant, Fugain, still confused, thanks Buron for this experience. Buron takes back his seriousness and passes the handcuffs to Fugain by announcing that the interrogation will resume in the morning. Fugain is taken back to the police station and Buron walks home.

In a post-credits scene, at the theater, the audience watches a lowered curtain.

• Keep an Eye Out at IMDb
• Keep an Eye Out at Rotten Tomatoes