Three hundred million homeless cats hide in America's cities, and most don't survive beyond a thousand brutal days of starvation, disease, and death as prey. When Princess Rosamonde Whitewhiskers, a purebred Abyssinian from an upscale cattery was dumped, she faced the slow painful death of the abandoned until she was rescued by a clan of wildborn who live in a nature park they call the Green. They believe Rosie is the 'Discarded Queen' of a Prophecy they follow religiously, for it promises to bring an end to the extinction of their species by man. In their world, homelessness is a crime and death the only punishment.
Rosie adapts to the forests, marshes and canyonlands of her new tribe, immersing herself in their mystical world of healers, seers, psychics, and empaths, learning their spiritual tradition of feline shamans who can manipulate the four elemental forces of nature: stone, air, fire, and water. Rosie's new life is rich with love and profound friendships in a place of idyllic beauty, but also fraught with danger that can only be alleviated by fulfilling The Prophecy, demanding a journey of heroes, where each must face his deepest fears and change from within. Will the kin of the Green be exterminated by the White Truck, murdered by Ghostdogs, or submit to the twisted rule of a sorcerer? Will they succomb to their inner demons? Or will each rise to his personal challenge and do his part to fulfill the Prophecy?
Rosie yearns for her human, and sets off to find her, but she and her troupe are relentlessly pursued by the coyote Grimfang and his new allies, a disillusioned dog, Grip, and Fleazor, a monstrous sewer rat. In the Green, Ghost battles for the kin's survival, and Rosie's son, Bigpaw, forges an alliance with Roak, a young raven prince who brings the support of his extended family.
The battle to save the Green is not over. The twisted wizard cat has an even more deadly plan to destroy the kin, aided by Char, an amitious dragon-queen and her ruthless two-legged, Angus McCheney. Danger has never been more intense or the way to salvation less clear as the kin rise to the final struggle to manifest the Prophecy and live in peace.