Consequences change people. The end of the third year creates a ripple effect in Harry, Sirius, Hermione, and Neville. Thus, beginning an escalation to open warfare against the specters of their lives. As Sirius Black and Harry declare War on those who sit on the sidelines and their enemies who seek their destruction and the destruction of their friends.

The accident at the end of third year changes things far more than Harry and Company expected and far more than what Albus Dumbledore had planned. The end of that year will bring a change in the priorities of the Hogwarts Company as they are taken under the wing of Remus and Sirius. To both prepare for war and life in the Wizarding world from family magic to efficiency of process.