A winter coat closet, rendered as a stylized animated feature. A tiny steam locomotive bursts out of a hanging coat's pocket in a spray of snow, a mouse conductor leans from the cab and calls the last train, and pocket seventeen opens onto a snowy tunnel glowing blue. Follow the train through and you land on the platform of a miniature railway station hidden inside the coat's quilted lining, where a mouse child is waiting with one lost mitten and no match for it. Pick or create your avatar, build a turnaround sheet so the character holds through every shot, lay the twelve beats out as a storyboard, then render the finished film.