Susan agrees to do all of Johnny's math homework for a month if he will agree to keep Bling-Bling away from her. Johnny & Dukey want $5000 to buy a new HDTV to watch Mega-Battle-Wrestling 9.
Dukey points out that Johnny can never really understand the pleasure of Butt-sniffing unless he's a real dog. To the lab! When Johnny learns about the legend of Johnny Appleseed, he wants to make his mark on the world by becoming a folk hero.
Johnny & Dukey see a preview for a new Speed McCool comedy.You're supposed to be 18 and willing to serve in the military to play a new on-line game - but that won't stop Johnny.
Big history test tomorrow and Johnny hasn't studied. He needs to stay home from school so he's got to get sick fast. He tries faking it but Mom's not buying it. To the lab! The Beast is the new scary blockbuster freaking everyone out. Johnny can't wait to see it but it's rated NWKU13CSTM, and he's too young. He needs a mustache so the cashier will think he's older. His sisters use the Zoomer Groomer to stimulate follicle growth and now Johnny's got the coolest stache ever.
Trying to improve on human evolution, the girls revisit their "extra arms" theory and, of course, test it on Johnny.Johnny & Dukey are wondering if there's life in space.
In "Return of Johnny'mon", Johnny's dad gets trapped in the new Tiny Mon video game, and in "Johnny Dukey Doo", Johnny and Dukey become involved in the delay of the destruction of an eerie old mansion.
