A police chief in northern France tries to solve a case where an old woman was brutally murdered on Christmas Eve. However, in a neighborhood rife with crime, everyone seems to be a suspect.

'Le cas Perrot' depicts a dreamlike world in a realist manner. It was shot with amateur teenagers in the style of a documentary in order to make fantastical contents seem naturalist. It was hence written and directed adhering to the logic that the brain adopts during sleep.