Ruff, Reddy, and Professor Gizmo have just escaped from the Muni-Mula air force and are headed home when their ship is hit by a meteor. They are now out of control. Reddy tries to pull on the brake lever and it breaks. Fortunately they are heading for Earth and are dected by the worldwide radar system and the planet goes on alert. They cannot slow down and they crash at the Professor's laboratory. Our heroes are beaten and banged but otherwise okay. Professor Gizmo puts his old beat up rocket ship up for sale and they watch the news about their landing. Now Ruff and Reddy help Professor Gizmo build another rocket ship.