Lyric discussion by RavenGrip 

Cover art for Nuclear Winter lyrics by Lonely Forest, The

This person forgot a few lyrics near the end. "We will come back to take revenge for our families, for our world gone by. Enemies must Die!" This is a key to the seemingly meaningless lyrics to the next song "Idiocy."

Anyway, as for this song, it is pretty straight forward. They're headed to the portal at the Cygnus Northern Cross where a prophetic dream tells him he will find a new world. It's a great and powerful song about the corruption of the world and the desire to escape from it all, and finally being able to do it. But also the fear of leaving all he knows behind him.