It's the sound of the spaceship are landing at the world, and while it is the voice of the aliens who are discussing. In the frequency of sound that we hear is not understood.
It's a spaceship is landing on Earth. And while there was a noise of aliens that were discussed. The frequency of the sounds that we can not understand.
It is the sound, spacecraft will be landing at the world. And at that moment, a sound of aliens that are discussed. In the frequency of sound, we don't understand?