Happy Date in Mystery Land (るんるんデートふしぎの国 Runrun dēto fushigi no kuni) is the 78th episode of Dr. Slump Arale-chan.
Synopsis[]
Arale finds a book that Peasuke lost. Somehow, Arale, Peasuke, Hiyoko, and Suzume all go into the world of "Alice in Wonderland" by the Fairy Tale Machine!