Content:

German library edition.

Humanoid aliens from Ganymede try to wipe out mankind because they need a new place to live. Ganymede can't produce any food, so they turn to earth. Earth is being saved by the two human heros with the aid of one of the Ganymedeans.

In the end, a peaceful solution is found, and the Ganymedeans move in with the terraneans. Obviously, the chief "Mr. Evil called "Yo" gets away and continues to cause trouble. "To be contd..."
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