In Lausanne, Léon is involved by accident with a small Leninist group and gets to know Léa, a dedicated activist and the group leader's mistress. The police keep a close watch on them and trouble is bound to follow.

A TV reporter and his assisstant go to a small Swiss village to do a programme with a reclusive scientist, an expert on world food shortages. During this time, an Italian immigrant worker is killed in a road crash and the reporter becomes involved in uncovering the truth about his death.

In Paris, an Arab immigrant working as a projectionist becomes obsessed with a mysterious woman he sees on the cinema screen. Following a visit from a man claiming to be his uncle, his world begins to mirror a macabre and cyclical narrative.