Mr. Peabody is the world's most accomplished dog. When his pet boy Sherman lets his new friend Penny talk him into using Mr. Peabody's their time machine without permission, moments in history begin to change and things start to spiral out of control. Now it is up to Peabody, with his genius-level IQ, and his pal Sherman to go back in time and turn things back to normal before the space-time continuum is completely destroyed. Based on the classic cartoon by Jay Ward.