Vanished! Neteru-kun

Synopsis

Today is April Fool's Day. Sad that no one's been coming over to the underground house lately, Boss pulls a prank: he tells everyone that "Neteru-kun has been kidnapped by the Muhamuha aliens," luring Hamtaro and the gang over. The underground house is finally lively again, and Boss is thrilled. When he steps out to bring the hidden Neteru-kun back inside, though, Neteru-kun isn't where he left him. Panicked, Boss joins the Ham-Hams in a frantic search…