Everything finally made sense!
All the things Nick had learned over his lifetime finally made sense!
The only thing he needed to hear was that there was definitely a traitor amongst the Shields.
By knowing who the traitor was, Nick just needed to combine a couple of clues, and everything finally fit together.
Although, maybe not everything…
'Where did the Sun come from?'
'It should have been created back during the era of the Ancient Ones.'
'Sadly, I don't know enough about the Ancient Ones to come to an answer. While we can see their power all across the world by looking at the gigantic ruins of steel, there's barely any writing or information left.'
'The Ancient Ones seemed to have changed the planet the most, but they are also the ones we know the least about.'