Italy

• 2 + 5: missione Hydra
• Raumkreuzer Hydra - Duell im All
• D?stination plan?te Hydra

Professor Solmi and his assistants discover a spaceship which has landed in the countryside. They captured and the spaceship commanded by the beautiful Keina heads for home to the planet Hydra in a distant galaxy. A violent struggle on a board diverts the ship's course towards an unknown planet. The two groups then face a terrifying adventure as they attempt to escape the aggressions of the planet's extraordinary creature inhabitants. During this dramatic life struggle a bond is formed and finally love as the spaceship heads for Hydra and a new life for the Earthmen.