Wren Calloway spent three years saving Dorian, a voiceless siren heir. He calls Wren a worthless null and tears their bond apart to protect Wren'sister, Celeste. But Wren was never worthless. Her devouring aura had been suppressed, and Celeste's genius was stolen from her. The unwanted white lion sent as Wren's replacement bond-partner is Kane, the kitten she once loved, now the beast king the rift monsters obey. When Wren takes back every stolen power, Dorian learns too late he was only holding Kane's light.