Pre-write Stories

This is a story that me and my bestfriend was starting to write. Eventually we got off track and we havent been writing it for a while now. I was wondering if I should bring this story back and start to finish it, let me know what you guys think. (Also it hasnt been edited yet, so it probably has a lot of errors, so please just excuse me for that) Also when me and my friend was writing it we were picturing it as a 3 part story.