The toons take Marvin the Martian's class, and head to space. Buster tries to cheer up a homesick Babs, Plucky searches for a space outfit, and Sweetie is too obsessed with a video game to notice any of it -- even when the aliens attack!

Babs and Buster attend a twin convention but are soon ostracized for not being exactly the same. Hamton accidentally becomes famous, and Plucky steps up as his manager. And Sweetie won't let anything stop her from finishing her board game.

Buster, Plucky and Hamton join an exclusive secret society but soon realize that the perks promised aren't worth the sacrifices. Meanwhile, Babs and Sweetie start their own public society that becomes a big hit on campus.