Since I'm not sure which 'The Way Back' original story you mean, I can't say for sure who the main characters are. But typically in a story about a journey, there might be a leader - type character who is determined and guides the others. There could also be a character who is more of a skeptic or a troublemaker at first but grows throughout the story.
The Way Back original story could potentially be about a group of people trying to return to a place they once knew. It could involve themes like longing for home, facing challenges along the journey, and the personal growth that occurs during the process. For example, they might have to overcome natural obstacles, deal with other characters who oppose their journey, and all the while learn more about themselves and their relationships.
It depends on your perspective. Some elements of 'A Way Back' are inspired by true events, but there might be fictional additions for dramatic effect. Overall, it has a foundation in reality.
The significance of the 'way back story' could be that it often shows growth or change. When someone is on their way back, they are different from when they left.