Invader Zim #43
Part 2 of the great Plim storyline! When Dib discovers the contents of a "secret vault" on planet Plim, he jumps into action to prevent ZIM from taking over the planet of vulnerable, naive aliens (who love ducks for some reason). But ZIM's got a huge lead, AND a bunch of ducks! Is it too late for the Plim? (Probably.)