"Fine. Go ahead and give me that testimony of yours." This is the Royal Castle of the Draconia Kingdom. Alice Chelsea, a humble yet loyal palace maid, is detained one day on suspicion of stealing a jewel from the Primary Queen, Gwen. Confused by a crime she has no memory of, Alice faces a time limit of only a few hours. In a desperate pinch where she will be executed if she cannot prove her innocence, a mysterious memory suddenly awakens! It is the memory of her past life, when she was a female detective... Utilizing her investigative skills from her time as a detective, she begins to pull at the threads of truth to find the culprit who framed her. ――Now, let the proof of innocence begin.