In Prague in 1891, while visiting a science and technology fair, five boys fearlessly boarded a controllable spaceship and began to travel in the air. No one who pursues them can catch them. They flew all the way from Europe to Oceania. Suddenly a typhoon completely destroyed the ship, and the boys were washed up on an unnamed island. They lived there like Robinson and discovered the legendary Captain Nemo's cave, where they would meet a group of adventurers.
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