Joe was playing in his house’s garden. He was collecting stones. While he was taking the last one, everything started to shake on the ground, and he fell into a room. In the walls, there were some spaces. First, Joe tried to find a way out, but he couldn’t. Then he got angry and started throwing rocks at the wall. A rock got stuck in the spaces. A light came out from the rock, and a weird letter appeared on the rock. He put the other rocks in their spaces, and a word appeared on a wall. It was writing “reverse house/cube,” but it was reversed. A light made Joe blind for a second, and he was in the garden, but there was no gravity, yet he was standing still. He realized the word. He ran to the beach. There was a reverse house, and there was a cube flying. He looked and found all the cubes. When he put them in order, everything became normal.