Marchioness Grafton returns to the capital. She is stopped by Heir Apparent Grafton's mistress, who mistakes her for the heir's wife. The mistress orders servants to humiliate her. Heir Apparent Grafton arrives, to find the humiliated person is his own mother. This uncovers conspiracies: Marquess Grafton, long rumored dead, returns. The rebellious heir is stripped of his title and exiled. Serene Marquis Manor returns to peace.