A magical purr-dicament

"Grant... I'm sorry if you won't be able to see me the same way... but I- I-..."

Melanie and Grant are a young duo of teenage (somewhat inexperienced) magic users that have been left in charge of a shop owned by the mother of the former over the summer; a shop filled to the brim with magical items and potions beyond their imagination; what could possibly go wrong?

The answer? Well, you would be sur-purr-ised

When a failed potion experiment renders one of them in an unfamiliar state after an accident with the production of one of, well, the more a-mew-sing and powerful potions, shall we say, the pair are in for an experience neither will ever forget...