A person walks by a clean white wall in a bright, sunlit gallery. Their shadow follows them, but then gracefully stops and starts performing a rhythmic, elegant dance. The shadow is made of soft, shimmering dark-blue particles. As the person reaches out to high-five the wall, the shadow hand gently emerges into the 3D world as a translucent, glowing crystalline form, meeting the person's hand with a soft trail of light.