How Soul explains it, The Great Before is where “new souls get their personalities, quirks and interests before they go to Earth.”
As the trailer shows, Joe Gardner’s soul runs in panic from The Great Beyond and ends up in The Great Before, which is a place where souls begin their journey and become who they are.
Does this mean if 22 decides to go to Earth she’ll do so in the form of a baby?
She then forms an unlikely friendship with Joe as he seems to try to convince her of Earth’s offerings.