In the Room of Requirement, a sheet of parchment lay spread across the table. Su Er sat quietly before it, waiting for the moment to arrive.
According to the plan, Black needed to stage a nighttime raid on Gryffindor, right when the Ministry of Magic party arrived at Hogwarts Castle.
Peter Pettigrew's memories had been wiped. All he would remember was that he had been sleeping in the Gryffindor Common Room the entire time.
Dumbledore had cast the Memory Charm. With Old Bumblebee handling it, no one would be able to find any traces.
Black would cause a major commotion in Gryffindor. Professor McGonagall and Professor Lupin needed to appear and battle Black when Su Er brought word.
Then, when Su Er arrived at the Gryffindor Common Room with the Ministry party and Headmaster Dumbledore, Peter Pettigrew would be struck by a Homorphus Charm from Black, transforming from a rat into a human before everyone's eyes.
A secret buried for twelve years would be revealed that night.
That was the complete script. Su Er had proposed the idea, and Old Bumblebee had filled in the details. Now, all that remained was to wait for the actors to take their places.
Through the Marauder's Map, Su Er had already seen that Hermione and Black had reached the Gryffindor Common Room. Professor Lupin and Professor McGonagall had also stopped nearby.
The Ministry's top man, the Minister, and its second-in-command, Amelia, were in position too.
Next, it was his turn to make an entrance.
Inside the Headmaster's Office on the seventh floor, Minister Cornelius Fudge, dressed formally, was talking to Dumbledore. Dumbledore had countless reasons he could use to summon Minister Fudge, such as-discovering Black's whereabouts.
Black's escape from Azkaban had been a vicious slap in the Ministry's face, leaving it utterly disgraced.