In a summer vacation, a group of 15 children discovered a mysterious man living in a seashore cave, along with his high-tech gadgets.
CountryJapan
On screen
Akira Ishida
Ao Takahashi
Daisuke Sakaguchi
In a summer vacation, a group of 15 children discovered a mysterious man living in a seashore cave, along with his high-tech gadgets.