Katie is entering in her 4th year a Hogwarts. She is excited to see her brother Louis caption the Qudditch team and to recover from last year. Last year Voldemort supposedly returned to power according to Harry Potter. Her perfectly planed year is turned upside down when she discovers that her parents are apart of the Order of the Phoenix. Louis then encourages her to join Dumbledore's Army to rebel against Umbridge. During this time Katie is hiding her biggest secret, she is in love with Harry Styles. Harry is a 6th year like Louis but he is in Slytherin. Katie and Harry try to hide it from Louis. What will happen to Katie and Harry in the new order?