Summer, 1976. Luz de Rueda returns to her beloved Spain and takes a job as the biographer of a famous artist. On her first day back in Cadiz, she encounters a bewitching, passionate young gypsy, Leandro, who immediately captures her heart, even though relationships with his kind are taboo.

Haunted by this forbidden love, she meets her new employer, the sophisticated Andres de Calderon. Reserved yet darkly compelling, he is totally different to Leandro - but almost the gypsy's double.

Both men stir exciting and unfamiliar feelings in Luz, although mystery and danger surround them in ways she has still to discover. Luz must decide what she truly desires as glistening Cadiz, with its enigmatic moon and whispering turquoise shores, seeps back into her blood. Why is she so drawn to the wild and magical sea gypsies? What is behind the old fortune-teller's sinister warnings about 'Gemini'? Through this maze of secrets and lies, will Luz finally find her happiness ... or her ruin?