Book excerpt: Sun Catcher is riding Sunshine when she comes across Stubborn Echo, a boy from her tribe who is doing something forbidden – riding Ghost, his father’s wind-drinker. Across the meadow from them, a grizzly bear cub emerges from the trees, it’s massive, protective mother right behind it. Sun Catcher and Echo escape on their wind-drinkers through the forest, Echo barely clinging to Ghost’s back. Suddenly, the ground gives way. Echo and Ghost plummet into a pit! Sun Catcher sets out to rescue Echo and Ghost, but she’s forgetting one thing: Echo detests her. At the first opportunity, will he abandon her and the wind-drinkers in the darkness?