Rosalind Sutton mistakenly enters Caden Warren's sedan chair. Betrothed to Prince Valerius, Duke of Lu and Lady Sommers disown her. They collude with Prince Valerius to frame Caden. Caden protects his wife. Rosalind thwarts plots. Caden is ambushed and injured. Rosalind finds him. They crush Prince Valerius's rebellion. Lady Sommers, Duke of Lu are brought to justice. The mistaken marriage becomes a blessing.
