Unknown danger approaches inhabited worlds from the center of the Galaxy. In some places, the activity of luminaries suddenly increases sharply, people disappear in a strange way, inexplicable incidents occur, but the interstellar community does not yet believe in the reality of the threat. A few daredevils, such as the dactian Cyrus Rem, the Hornet and Maromanns Max Hauer and Dr. Boris Bose, have to stand up to protect their worlds. They forgot about the feud and became one team after in the sector of the planet Terranova faced the first signs of impending general trouble and with its messenger, the ship "Steel Butterfly." To learn as much as possible about the enemy, Hauer, Rem and the team go to the free planet Enium, the main information intersection of the inhabited part of the Galaxy. How did they know that the enemy was watching them and that with their visit they were putting Enium under attack?.