Once upon a book

A book , A wand , a magnifying glass and the boy who lived . Five eleven year olds find themselves trapped in the first book of the the seven books . Harry Potter. Could it get any worse ? Actually it did. One of the girls got a chance to live beside Harry. Like literally 'beside' him all the time . Well in other words, she turned out to be his ....................... Sister. Huge turn of events, cool wand fights , oversized chess boards that could and can and will kill you. Things can only get better............ Right?