One day, Chiikawa and friends receive a very beautiful gemstone as a souvenir from a rabbit who said, “I went on a trip.” Although it's unclear where the rabbit went, the gemstone is so beautiful that they want to keep looking at it......

However, one day, the rabbit goes missing! Worried, Chiikawa and Hachiware follow the few clues they have......

They arrive at an incredibly old ryokan (Japanese inn). Upon entering, they find many people mining......? that beautiful gemstone in the main hall.

Chiikawa and Hachiware are relieved to find the rabbit among them. However, the rabbit seems odd, and the moment it stops mining...... incredibly, it turns into a beautiful gemstone itself!!

Chiikawa and Hachiware panic. But they begin to feel compelled to mine...... The cause was a small snake spreading a curse in the hall. If this continues, everyone here will turn into a gemstone, and those who receive these stones as souvenirs will be lured here to mine! Chiikawa and friends try to catch the snake, but......!?