During the French Revolution, the Duke and Duchess of BĂ©rac are captured by a mob. The Duchess agrees to marry one of their leaders in order to save her husbandâs life. But her husband finds out about this, and forbids the Duchess to do so. The girlfriend of this leader takes revenge when she learns the truth, and stabs him. The two BĂ©racs then proceed to the guillotine with their heads held high.