Once upon a time, a man who believed in fairy tales married a beautiful, mysterious woman named Indigo Maxwell-Casteñada. He was a scholar of myths. She was heiress to a fortune. They exchanged gifts and stories and believed they would live happily ever after - and in exchange for her love, Indigo extracted a promise: that her bridegroom would never pry into her past.

But when Indigo learns that her estranged aunt is dying and the couple is forced to return to her childhood home, the House of Dreams, the bridegroom soon finds himself unable to resist. For within the crumbling manor's extravagant rooms and musty halls, there lurks the shadow of another girl: Azure, Indigo's dearest childhood friend, who disappeared without a trace.