After discovering the security cameras are disabled, the night guard at a private museum finds a diary left by the previous guard who mysteriously disappeared. The diary reveals that artifacts moved on their own and a bronze sword nearly injured the former guard after he tried restoring a damaged mirror. The previous guard’s fingers turned porcelain-like, suggesting a supernatural transformation linked to the mirror. The current guard suspects those broken shards found earlier belong to the predecessor but is confused about his own safety after handling the mirror. The episode ends with him sensing an unknown presence nearby.