A wealthy businessman's wife tries to cover up his suicide to cash in his life insurance policy.

Vallois, a vice inspector for the Paris police, takes special interest in the plight of drug-addicted Lucky (Najda Tiller), whom he considers to be more victim than criminal. Taking it upon himself to wean Lucky away from narcotics, Vallois also wins her love -- and, incidentally, smashes the dope ring responsible for her addiction.

While Henri was a POW during the war, his wife passed away, and he returned to face the challenges of bringing up three children alone. Henri may get drunk and angry at times, but he also has a better side that will not stay buried.