Mindy's mother leaves the house and Brain develops a plan to take over the world. He develops a powerful stink bomb which he hopes to use to force the government officials out of thier jobs. As he makes the stink bomb, Mindy gets on a lawnmower and drives out of control. The lawnmower chases Brain and eventually knocks him into his stink bomb ingredients. Mindy's mother comes home and scolds Brain for letting Mindy feed him old cheese.