Dream About Grandmas House Lurking Shadow Figure

I was at my grandmas house, and there was the laundry room wrongly placed. I would often look under it, seeing something red. My brothers were there and they went into the garage. It wasn’t until before long, they never came back. I had tried to follow them, but it was too dark. I go back, proceeding to look at the laundry door. After a few times of seeing it, I find myself on the couch. Creepy music was in the background, and I saw a shadow figure lurking.