Born with face blindness, Sienna discovers on her wedding day that her fiancé, Callum, and her parents hired a stand-in groom. They did this so Callum could secretly give Sienna's best friend a wedding next door. Instead of crying, Sienna plays along and marries the stranger. To everyone's shock, her new husband is Cassian Vale, New York’s billionaire CEO. Cassian dyes his hair icy blue so she can always recognize him, giving her the love she never had. By the time Callum regrets his betrayal, Sienna is happily married to the man who truly cherishes her.
