Runway, Houses, City, Clouds
I'm sure something happened at 4:21. After a time spent in deep thoughts while escaping from his home, his city, towards the clouds, there was a break in his mind.
Yet, the destination doesn't matter. All he wants is to not remember his home and everything that has changed, a journey from the concrete to the more spiritual, between different aspects of life and environments.
But the plane is losing altitude...