In his lab, Jimmy constructs the perfect little brother he never had, "Brobot".

To settle an argument with Cindy, Jimmy brings Thomas Edison to school.

Jimmy's Granny comes to visit and he gives her his new youth tonic potion.

Jimmy and Cindy are forced to collaborate on a science project involving hidden treasure.

Jimmy invents the Dream Injector 5000 and enters Carl's dream to figure out what he is afraid of.

Jimmy's attempt to cool off the summer heat wave results in a new Ice Age.

Jimmy, Carl and Sheen form a band in order to beat out Cindy and Libby for the talent contest first prize.

To get revenge on Cindy for winning a race, Jimmy adapts his running shoes so he can move at lightning speed.

Jimmy comes up with an invention that allows him to read Cindy's mind.

When the old tyrant of a hall monster leaves, Jimmy is picked as his replacement.