Spinoza, attempting to discover why his son committed suicide, meets his girlfriend and his rival for her affections.

Antonin is a young French soldier who returns home from World War I to recover from his wounds. When he falls in love with a young widow, Antonin questions his role in battle and contemplates desertion as he recalls the horrors of war. He is pressured by his patriotic father to honor his military commitment even if it means he will die.