Though, plot is really intriguing, keeps you at the edge. And, seeing the GANG back, with time-travelling stuff to relive all the special moments of HARRY POTTER saga, that's make it an amazing ride.
There are so many WOW, OH SHIT moments even in such a short story, making it a MUST READ kind of book.
I just can't wait to see a MOVIE on it. It would be truly amazing, seriously.