A shy little ghost working his first night shift in an enormous haunted hotel is chased not by monst

A shy little ghost working his first night shift in an enormous haunted hotel is chased not by monsters but by terrified human paranormal investigators who think he is the threat, he phases through walls, hides inside lamps, accidentally possesses a luggage cart and rockets through hallways while trying to protect a sleeping child from a collapsing chandelier; richly stylized 3D supernatural comedy, soft translucent character rendering, expressive spectral body animation, smooth hallway tracking, playful perspective through walls and furniture, moody teal moonlight mixed with warm golden lamps, floating dust, glowing ectoplasm and rattling objects, funny but heartfelt atmosphere, ending with the ghost catching the chandelier in midair by solidifying himself for the first time, gently lowering it beside the child as the investigators finally realize he was saving everyone and silently lower their equipment.