Mable West is a young boarding school student looking for adventure. While on holiday with her father she meets the famed detective Hercule Poirot and his partner Hastings. With dreams of becoming Poirot\\\'s assistant Mable is living in London going off on adventures to solve mysteries. But her father has one rule visit her great aunt Jane Marple. Mable learns life in the countryside is full of mysteries that Miss Marple helps to solve.