This documentary is the first co-production between the GDR and the CSR, showing Czech pioneers exploring the island of Rügen and the "Ernst Thälmann Pioneers" climbing through the High Tatras. Motivated and full of curiosity, the children from the CSR experience the beauty of the sea, sail on the training ship "Wilhelm Pieck" and enjoy swimming on the island of Rügen. The parallel visit of the GDR pioneers gives them exciting and unforgettable experiences on a cable car ride to the peaks of the High Tatras, where they learn a lot about the flora and fauna and recognize the overwhelming beauty of the mountain world with a good view.