21世紀地球與外星球來往頻繁的年代中，一個東京的老舊旅館中遇上各種奇異宇宙客人的故事，以及喜好宇宙旅行的老闆兒子21衛門，在宇宙探險中所發生的趣事。
Key Animation (eps 1-2, 4, 7, 9, 12-13, 17, 21, 24-25, 29)
Director, Script (ep 39), Storyboard (eps 1, 11, 20, 23, 28, 31, 35, 38-39), Episode Director (eps 1, 39)
Key Animation (ep 3, 6, 10, 14, 18, 22, 26, 30, 34)
Original Creator
Sound Effects
Theme Song Lyrics (OP)
Animation Director (eps 25, 29, 33)
Mechanical Design
Storyboard (eps 4, 8, 15, 33)
Storyboard (eps 3, 6, 10, 14, 18, 22, 26, 30, 34), Episode Director (eps 3, 6, 10, 14, 18, 22, 26, 30, 34)
Key Animation (eps 19, 25, 29, 36)
Key Animation (ep 3, 6, 10, 14, 18, 22, 26, 30, 34)
Music
Theme Song Composition (OP)
1991年 季度排名 #1
1991年 動畫總排名 #31
