Motto! Ojamajo Doremi: Secret of the Frog Stone was the second movie released for the Ojamajo Doremi series on July 14, 2001. The events of the movie are mostly centered on Aiko Senoo overcoming her fear of elderly people.
The group learn of the legend of the Frog Stone and a story of a couple. The witch apprentices, minus Pop, go in search of the stone.
They lose their powers, end up getting lost in the forest they're in, and talk to Aiko about what happened between her and her grandfather.
The group encounter what appear to be ghosts, but were actually Doremi's father and grandfather wearing masks as part of a tradition.
When they return to the cabin, Aiko's fears have receded.
- This film marks the only appearance of Doremi's grandparents
- https://www.amazon.co.jp/dp/B01LDHBLSS/ - Purchase page on Amazon Prime Video.