What was the purpose of the journey?

''Starling: Well, I woke up one day to find my camp deserted. I thought to myself, '''Wait, what the heck? This cannot be true.' So, I went to look for Sparrow, if he hadn't gone too.

'''Sparrow : I had no choice. I had to come with her. And besides, despite her being cranky and rude at times, I kinda liked her. We had to leave that morning. '''

Starling : We traveled through the