McNeeley the Mouse lives under the stairs in the Turley's house. All is well, except that the Turleys like to eat a lot and don't like to exercise. Each time they go up or down the stairs, the boards creak more than the last time, and McNeeley is afraid that the roof of his own little house will cave in one day. So, McNeeley and his cousins must devise a plan to save his house, and maybe even save the Turleys at the same time!