A baleful limping man walks through Prague. He is Asmodeus (Juraj Herz), the fiend of lustfulness, entertaining himself by putting together by magic couples of lovers.
Five criminals are arrested after a bank-robbery. One escapes, and the police officer in charge of transporting them arrests a new person at random to cover up for his negligence.
Forced behind British lines by engine problems, the Red Baron camouflages his plane, swaps uniforms with a dead soldier, and, posing as a Belgian, makes his way to a hospital.