When Alexandra runs away with her lover just before her arranged wedding, her family faces a scandal that could destroy their reputation. Desperate to save them, her twin brother, Alexander, is forced to disguise himself as his sister and marry the powerful, cold-hearted Duke Cassian in her place.
Dressed in a wedding gown and hiding his true identity, Alexander enters a dangerous marriage built on deception. But something unexpected happens: rather than treating his new bride with indifference, Duke Cassian seems strangely fascinated by him.
As the duke's attention grows increasingly intense, Alexander begins to wonder whether Cassian already knows the truth.
