After a car accident, Emily pretends to have amnesia—and quickly discovers her husband William has been lying to her. To hide his affair with her best friend, William denies being her husband and sends his best friend Dominic to take his place. Emily plays along, intending to uncover the truth and get revenge. But Dominic, who has secretly loved her for years, treats her with patience and genuine devotion. As Emily falls for him, William's jealousy turns into a desperate fight to win her back—only to discover she was never fooled.