Thirty million light-years from the Milky Way: The galactic fleet under the command of Perry Rhodan is scattered far across the galaxy M 82. The star island is under the control of the superintelligence Seth-Apophis, which has long been waging a secret war against the inhabitants of the Milky Way. Now, the people around Rhodan must fight for their lives within the enemy's sphere of influence. To save the crew members of the twenty thousand spaceships, Rhodan dares to play a dangerous game. He intends to send out the cosmic pulse - this radio signal is meant to reunite the scattered fleet.