理想の温泉を見つけたちびガイガン。
最高の炭酸水素塩泉だと喜んでいると、ヘドロでできた怪獣であるちびヘドラが現れて…
ちびガイガンは理想の温泉を守ることができるのか！？
Chibi Gigan has found the ideal hot spring.
He is happy that it is the best hydrogen carbonate spring, but then Chibi Hedorah, a monster made of sludge, appears...
Can Chibi Gigan protect his ideal hot spring?
