Long exiled from the Moon, the men of the Monere serve - and mate with - imperious Queens who can channel the rays of their far-off homeland. Roberto, a jaguar-shifter of mixed Monere heritage, arrives in Cozumel to kill a rival. But he finds a more valuable prize in Mona Lisa, a Monere who's lost her memory and can be manipulated into believing anything - no matter how dark or dangerous.