Slicker sells the Our Gang kids some "invisible rays," with which they hope to power their homemade mechanical robot. Miracle of miracles, the robot not only begins to move, but actually performs several of the gang's household chores. In truth, the robot is being manipulated by Slicker's cohort Boxcar, but the kids do not learn this until their rampaging mechanical man nearly lays waste to the entire neighborhood.<ref name="NY Times"></ref>