What if males and females were completely different species from each other?

WALLS OF WIND explores this question and its ramifications on a world in which males and females are two equally intelligent sentient species: Ghen and Bria. They are interdependent and reproductively symbiotic, although physically, emotionally and mentally they have little in common. Or so they believe, until their city-state is threatened by increasing internal conflict and a terrifying external predator that has invaded the forests just beyond their walls. A handful of Ghen and Bria struggle desperately to find a solution before their civilization is destroyed. WALLS OF WIND combines anthropological speculation with the tragedy, suspense and triumph of individual characters who struggle to overcome external threats as well as their own internal fears and prejudices.