When Ryo-Ohki is wrongfully blamed for breaking a statue, the upset little cabbit decides to run away from home! Wandering alone in the forest, Ryo-Ohki soon meets and makes friends with another cabbit named Yu-Ohki- all the while unaware that Yu-Ohki is a servant of the evil Yugi! And when Yu-Ohki traps Ryo-Ohki on the moon, it falls to Tenchi and the gang to find and rescue their diminutive friend.