In the dungeon, Draco tries to pass the time and not die of disgust, in another cell...Otmin, activate the transformation stone!...this scares the other prisoners, who bang on the cell, Draco hears these screams from what he approaches to see...Otmin...becomes a much larger, more robust minutaur and grows a new set of antlers and fangs...having a much more intimidating appearance, Otmin uses one of the prisoners to break the cell, guards approach to stop him, but they are easily killed by Otmin who could not hurt in the slightest.

Draco Malfoy: "Intriguing."

Otmin uses his enormous strength to open the cells and free the prisoners, who are very enclosed with all of Hogwarts, quickly alerting the guard wizards, Otmin frees everyone and a battle ensues in the dungeons... everyone except Draco , who limits himself to looking at it, leaves it there.

Draco Malfoy: "You want a recommendation, use the stairs on the left."

Otmin looks at him out of the corner of his eye, but he listens to his advice. Harry is also alerted, as an alarm trumpet sounds through Hogwarts castle.

Minerva McGonagall: "That came from the dungeons."

Harry Potter: "Draco."

Minerva McGonagall: "Go, Harry, I'll take care of her."

Harry takes the broom from him and flies towards the castle, where Neville and Ron are already fighting the escapees.

Ron Weasley: "Did we do something to make them angry?"

Neville Longbottom: "I don't know, maybe we just locked them in these cells."

Ron Weasley: "Just for that."

They both laugh as they fight, during the battle...Draco reads one of those books, then Harry arrives in the dungeon.

Harry Potter: "Let's make a deal, you go back to your cells and I forget this happened."

A prisoner beats up Harry.

Harry Potter: "Okay, it will be the hard way."

Harry fights helping his friends. Dumbledore prepares more troops.

Albus Dumbledore: "A squad will go to the Chamber of Secrets, immediately, defend it at all costs, just like the dungeon."

Minerva McGonagall: "Mr. Bright."

McGonagall and Hermione arrive.

Albus Dumbledore: "Professor McGonagall, the rest of you do as I say!"

Dumbledore is left alone with both of them.

Albus Dumbledore: "It's just a brawl, nothing to fear."

Minerva McGonagall: "Come on sir, we both know you're not very good at lying."

Ginny walks past with the troops of guards, exchanges glances with Hermione, a very direct hint, but they don't make much of it.

Albus Dumbledore: "Take this young woman to your chambers, I will send for you when it is safe."

Minerva McGonagall: "Take care, sir."

Albus Dumbledore: "My dear McGonagall, even with everything I've been through she still cares for me."

Minerva McGonagall: "When has it been different?"

The two exchange displays of affection and Dumbledore goes to battle and McGonagall with Hermione.

Minerva McGonagall: "Young Hermione, you will do everything I command you, understand?"

Hermione Granger: "I'm good at obeying."

In Hagrid's hut, he hears the flapping of a flying creature, he can't see it but he knows it's there, so he runs across the stone bridge, climbs on a turret, jumps...and attacks the goblin that he was on a fellbeast, knocking down both the creature and the rider, but he doesn't have time to celebrate, because behind him...a huge wyvern appears!...which releases small fellbeasts, they fly in the direction of the citadel, archers they fire from turrets, but the skin of the fellbeasts is so resistant that they hardly fall, taking the archers with them, others fly on golden hippogriffs and fight the goblins in the air on fellbeasts, making the battle more close and even. Hagrid goes into his hut and uses his own wand to cast a spell.

Rubeus Hagrid: "I defend, I protect...I protect the most!"

Hagrid throws in combination with Fianto duri and Repello inimicum to create a magical barrier around the castle, some fellbeasts die just by touching the barrier. Inside, Otmin leaves a path of death, killing as many wizards as he can, reaches the chamber where the barrier came from...and destroys it with his bare hands!...the barrier vanishing, some fellbeast enters the castle , Harry and his friends realize that there is something above (as does Draco). Armed wizard guards prepare to fight, goblins also armed goblins come out of the fellbeast and a battle begins inside the castle, which is dominated by the goblins, arrives...Grindelwald, the master and lord of the goblins, who destroys the dais of Dumbledore. He arrives shortly after the scene of the massacre, almost all of his wizards died, Dumbledore kills a remaining goblin, but he knows who is behind it.

Albus Dumbledore: "McGonagall!"

Grindelwald breaks into McGonagall's chambers with Hermione, both of whom are intimidated by the terrible wizard.

Minerva McGonagall: "Stop now, you scum, and you just might make it out alive."

Gellert Grindelwald: "Believe me, I've survived more than you can imagine."

Minerva McGonagall: "Who are you supposed to be?"

Gellert Grindelwald: "Grindelwald, the terror of wizardry...now I will get what belongs to me"

McGonagall looks at Hermione, Grindelwald discovers her goal... but before approaching her, McGongalla pulls out a dagger and slashes across her face, starting a fight, McGonagall is still skilled at fighting, despite subduing Grindelwald...Otmin appears and easily stops her, Hermione is cornered.

Gellert Grindelwald: "Young lady, you have taken something that is mine... now give it back to me."

When Grindelwald touches her...Hermione disappears!...It was McGonagall's trick.

Gellert Grindelwald: "Damned witch!"

McGongagall winces.

Gellert Grindelwald: "Where did you send her?"

Minerva McGonagall: "I'll never tell you."

Gellert Grindelwald: "I realize."

Otmin stabs McGongall to death!

Harry Potter: "No!...Fire!".

Harry casts a spell that burns the left side of Grindelwald's face, leaving him injured. Otmin immediately grabs Grindelwald and throws himself off the balcony...fleeing on a fellbeast, Harry can't do anything, Dumbledore arrives...too late, sees McGongall's body...and hugs him, besides crying for his death, Harry is heartbroken...Hermione sees this...feels terrible, the invasion is over.