Earth is a fascinating planet. In the vast, infinite universe, it remains the only known place where life has emerged. But how did that happen? Eva is small, and her problems feel huge. She’s afraid of the wolves that seem to be everywhere, always lurking. But she has her mother—someone who understands her completely. To comfort Eva, her mother tells her three gripping stories from the history of life on Earth, where even the smallest and weakest have found ways to overcome the strong. Like the brave little cell—without it, there would be no plants or animals on Earth today. Or the Tiktaalik, a fish from the ancient seas that dared to venture beyond the water’s edge. And the prehistoric squirrel that managed to outlive the towering \"rulers of the world\"—the dinosaurs. Will little Eve also find the courage to stand up against the odds?