Underneath

Every child knows the rule don't look under the bed. Underneath is a dark cel-shaded horror anime short following Carter, a boy who breaks that rule and pays the price. Snatched from his bedroom by Grin Face, a silent smiling entity that lives in the dark gap beneath his mattress, Carter is dragged into The Tuck In — a lightless void filled with grinning creatures, reaching hands, and a relentless nightmare called Hudson Hippo that doesn't stop, doesn't slow down, and wears a smile it was born with. His only hope is Luna Lu, a girl with pink spiral eyes who already knows this world. She's been here before. She gets Carter out. But the final shot tells you everything: Grin Face never left. It was never under the bed. It lives there. It will always live there. Underneath asks the question every child already suspects is true: what if the thing in the dark wasn't your imagination? What if it was just waiting for you to look?