At the very edge of Dimwood Forest stands an old charred oak. A great horned owl, Mr. Ocax, waits there. With his piercing gaze, he surveys the lands he calls his own, watching for the creatures he considers his subjects. None dares disobey him, until the night a courageous deer mouse named Poppy boldly defies him, only to find herself in terrible danger. To lead her family to a better life, will Poppy battle Mr. Ocax to the end?