Downloading The Price of Magic is Sex

The last thing you expect on first having met an octogenarian, is for her to urge that you indulge yourself in masturbation, right there and then. For Maggie, very sexually inhibited but frustrated and highly sexed, her giving into the suggestion is only the start because she has been identified by a magical creature masquerading as a cat to become his magical partner.
The reward though for co-operating is considerable, youth, health but most of all freedom from crippling sexual inhibitions. The reward for Dot, the importuning old lady is the same apart from the inhibition bit, as she lost those years ago.
They form a partnership of considerable wealth and self-indulgence there is however a fly in the ointment. The cat operates outside of time and passes back a message that there has been an appalling terrorist attack and they have to ensure that it never happens, to change reality in fact.