Halloween's key

Design a video script (about 30–40 seconds). It’s a story with a thriller vibe: a dark version of Alice (her outfit tinged with dark-academia, slightly gothic) runs to the willow by a pond. Suddenly, a small drawer slides open in the tree trunk; inside lies a key. A cold gleam flashes in Alice’s eyes. Clutching the key, she sprints into the woods and stops before a giant purple mushroom. The moment the key touches it, the mushroom dissolves into violet smoke. She bursts into laughter as the ground yawns open into a great door. The overall mood is eerie and foreboding, yet bathed in natural warm light.