Help with writing?

Hello, since webtoons is hosting a contest i want to try to write a new story. So, I was wondering if someone could help me or at least give me a different perspective on my story. I have an idea, but I can't seem to put it together. i haven't figured out the ending.
i don't know if I'm allowed to post here about the story or not

edit: if you want to read what I have so far, which is basically a brain dump, here's a google docs link: https://docs.google.com/document/d/1UuhWdcl8ZnvL7RS6J_RfHnr7_PqTpz6Sxd0Lzz1e3IQ/edit?tab=t.0#heading=h.51k89wwku5m7