It’s a very long story…

It would have been perfect for the aliens if rockers and metalheads hadn't recruited Zurab Tsiriteli. Tsiriteli created the MegaScene, where they placed MegaSpeakers, and gave metalheads and rockers MegaGuitars. They decided to hold a MegaRockMetalConcert to celebrate the newly established peace. The aliens strongly opposed this, because music on such a scale would awaken the zombie mosquitoes, and for those whose brains have already been eaten, it would create new ones, while the sound would give the aliens the Third Cosmic effect (I know, there isn't one))) and send them beyond the galaxy, unless they crash into a star along the way...