Riders form a bond with friendly monsters called Monsties hatched from eggs, riding them as mounts for travel and combat. Due to monster riding being a taboo skill in a society filled with monster hunters, Hakum Village is isolated from the outside world and keeps its riding tradition a secret to all but a few privileged individuals. As Lute adventures with his friends and learns more about monster riding, a past threat remerges called the Dark Blight, infecting the nearby forest and leading to more aggressive monster attacks.