I wouldn't stress about your grammar too much. the only thing that stood out that bad was the insistence on calling what was either a bat OR a stick a "bat stick". Otherwise it read just fine
okay, I was skeptical at first to read it since I wasn't sure what was going on in first few paras but now that I'm one chapter in I'm starting to enjoy it more!
This story is an attention grabber. It does need editing. I'd like to help you with that. Contact me if you're interested. I'm offering my services in order to build my portfolio as a freelance copyeditor & proofreader.