Searching For The Key (Femdom, Chastity)

Arthur doesn't know what he's let himself in for when he agrees to be locked in chastity for Mistress Simone. After six months in a cage, he expects to be given his freedom, but instead discovers that the old lady has died. He has no idea where the key is and nobody to help him look for it, apart from her granddaughter. However, does she really want to help him or is she merely toying with him?