Monster story

My family went hiking in the amazon river we went inside a cave, deep in the cave and we searched in the cave. Then I spotted a monster looking clay holder. I held it in my hand it felt smooth and looked black. I then kept it until we were done with camping. When we were going back home in Maple Valley we went to a scientist who professions in architecture history he said that back in 800 B.C. Their were art people who had clay and they made things like the monster. He said that they made it then sold it for money. I then thought this was important to me and kept it as a prize. After that when my family and I got home I named it cave. Because i found it in a cave. It was always on my shelf but that day on. Everyday after school without me touching it. I was in 3rd grade and I was very very very very very smart. So one day I took it to show and tell and showed everyone at school. Everyone was scared because it was a monster but when I was going home I held it in my hand and a scary hobo on the street looked at it and said that is mine. He was very old and I was confused. I got home and went to sleep. In the middle of the night there were 3 caveman looking people who went through a big circle of light and they took the monster art and went back in the portal so then I found out there was a company making a time machine so a few days later I figured they were done and were ready to use the time machine so I went to the company building and secretly sneaked in the building and went past the guards. I turned on the time machine and went back to the time where I was sleeping and the 3 cavemen went into the teleporter. When the cavemen went to get the monster art I then went into the big blue circle and it seemed like I was in the old age. I looked for the art and never found it. It was night time so I found shelter to sleep in. the next day I snuck into a cave when a caveman family were sleeping and I found the art piece. After that I took it and ran away. I then found a tree with a hole in it and the big blue circle was there again I went into it then I was in medieval age I was in a war where knights were fighting. During this was happening I ran away as fast as I can and fell into a big hole there was another big blue circle that looked like a patrol. I went through it and it looked like the regular age that I was normally in. I then asked my mom and dad where was I and they were worried about me. I then forgot all about what happened and fell asleep.