Kiba's main character is Zed, a 15-year-old boy who lives in a place called "Calm". Frustrated by his current situation in life he feels that somewhere out there is a place where he can live more fully. One day, at the invitation of a mysterious wind, Zed dives into a space-time crevasse (portal), seeking the answers that might be there. Riding on the wind, he is transported to a war-torn world.