A Knight from the Medieveil era has been placed under a nasty spell by an equally nasty sourceress. When Paige accidently summons the enchanted Knight to the future, he mistakenly believes her to be the love of his life and, it seems will not take "no" for an answer, nor will he believe her when she tries to explain to him that he is wrong and that she is not who he thinks she is. Perhaps this will teach Paige to stop playing with magic that she knows nothing about? After all, it will only get her into trouble.
I think the relative mediocrity of this season is being shown a little too regularly here and I feel that it's mostly due to the absence of Shannen Doherty and audiences trying to accept Rose McGowan while Rose herself does her best to fit in. Let's hope it all sorts itself out in time.