Attack of the Twonkies
Jimmy returns from the Twonkus-3 comet with one of its native creatures in tow. Carl adopts the "Twonky" and brings it to class where, in front of everyone's eyes, it starts coughing up identical little creatures. But these sweet little creatures start mutating into wild monsters. Now Jimmy's got to get them back to the comet before they destroy Retroville!
Send in the Clowns
Jimmy wants to go to space, but his mother has chores in mind for him. What's a boy to do? Clone himself, of course! But now one of his clones is wreaking havoc on Retroville!
A Beautiful Mine
A meteor encrusted with "asterubies" lands in Cindy's backyard. When Jimmy sees the sparklers, he convinces Sheen, Carl, Cindy and Libby to head into space with him to mine the priceless gems.
The Junkman Cometh
Jimmy's robotic brother, Brobot, asks for Jimmy's help to rescue his parents when the evil "Junkman" abducts them.