A Step on the Wood

My boots felt cold against the smooth wood. I tried flexing my knees, and they actually bent! Right next to me sat a flat black plastic disc. Curious, I took a firm step and nudged its edge with my toe. It slid an inch with a dry scrape across the grain. Across from me stood another spiky-haired figure, completely motionless. My limbs are full of energy—I can move!