After the Cockroaches are accidentally run over by Oggy's new remote-controlled lawnmower, they forge their own robot that looks like a mouse but acts like an alligator.
Oggy got a mower from the mail. He builds the mower first, then he cut off the grass so his grass was short enough. The cockroaches was cut as well. Joey has to look and concentrate, Dee Dee and Marky run before the mower and they are cut off their body. Later that night Joey uses the cat destroyer and it looks like a mouse. The next day Oggy wait until his coffee was hot enough and behind him, a mouseagator eats his chair first and his weapon second and it ate the fridge and the cockroaches take all Oggy's food. He got to get the mouse and it eats the whole thing in his walls and stairs. After Joey turn off, Oggy got the mouse. Later the mouse change its mind. It eats every food and chase the cockroaches and they were scared. The hero is Oggy's mower to defeat the mouseagator and then the cockroaches were safe, but Oggy gets cockroaches' punish to eat the grass.