An adventure story for young people set in a summer camp for boaters in Juná. Eda, marked by a tragic experience of occupation, has difficulty getting along with the other boys. He only gains their trust and friendship when he helps to uncover German saboteurs.

Antonín Šůra
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Karel Richter
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Ladislav Boháč
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L. H. Struna
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Stanislav Neumann
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Oskar Hák
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Stanislav Fišer
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Oleg Reif
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Zdeněk Borovec
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Jaroslav Seník
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