One day, Xiaoxin (voice of Yashima Kyoko), Koizumi and Miki (voice of Miki Takahashi) were kidnapped by a group of mysterious people and woke up to find themselves in a mysterious base, which turned out to be a secret organization called "Hot Spring Group G". It is intended to protect the hot springs that are very precious to Japan. However, Dr. Dacheng, who was born out of nowhere, tried to use the "Earth Hot Spring Project" to completely defeat Group G of Hot Springs. The only thing that can stop the plot of Dr. dirt is the legendary "Golden Soul Hot Spring", which the team members found to be good for Xiaoxin and his family after investigation. The Xiaoxin family decided to help the compatriots in Group G of Hot Springs find the Golden Soul Hot Springs, but they were attacked by Dr. dirt, and eventually became prisoners and tortured.