When the robot ruler learns that the destruction of Earth was nothing but a brilliant bluff by Perry Rhodan, he turns to humanity with a plea for support against a terrible danger. More and more frequently, planets in the Milky Way are being attacked out of nowhere and mysteriously depopulated. Atlan, the Immortal, recalls similar incidents from a distant past when he established the fortress of Atlantis on Earth. Specialists from the Solar Empire eventually manage to find a clue - a clue leading to another space and another time. The battle against the massive overlapping fronts of a dimension begins - and against the unknowns who seem to be exploiting this catastrophe.