DISCLAIMER: I obviously don't own anything that you can recognize from this piece of writing, since it obviously belongs to the great JKRowling.

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APOLOGY: As always, I apologize in advance for all the grammar and spelling mistakes you might find (certainly find) in this and the upcoming chapters. I am not a native English speaker and I will appreciate any correction, any suggestion you may want to leave in your reviews; but I will not get a beta-reader because it just doesn't work for me.

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A/N: This is some crazy idea I had a couple days ago. First it was going to be some kind of "fairytale" but then, while rereading some chapters of tOotF, I got inspired in a different way.

It was meant to be a one shot, but it's 3am here and I thought it was long enough to be a nice introduction... I don't think it will take more than 3 chapters.

The main characters are McGonagall, Umbridge and Severus (who doesn't appear in this part, yet).

Well, I hope you enjoy it and please, review if you have time.

Let's do some memory: This starts in chapter 29 "Career Advice", book 5, The Order of the Phoenix: Harry has his career advice meeting with McGonagall at her office, where there's also Dolores Umbridge. The two professors argue about him being able to get the marks necessary to become an auror and Minerva kind of "wins" the discussion...

EXTRACT FROM THE BOOK

Professor Umbridge stood up. She was so short that this did not make a great deal of difference, but her fussy, simpering demeanor had given place to a hard fury that made her broad, flabby face look oddly sinister.

"Potter has no chance whatsoever of becoming an Auror!"

Professor McGonagall got to her feet too, and in her case this was a much more impressive move. She towered over Professor Umbridge.

"Potter," she said in ringing tones, "I will assist you to become an Auror if it is the last thing I do! If I have to coach you nightly I will make sure you achieve the required results!"

"The Minister of Magic will never employ Harry Potter!" said Umbridge, her voice rising furiously.

"There may well be a new Minister of Magic by the time Potter is ready to join!" shouted Professor McGonagall.

"Aha!" shrieked Professor Umbridge, pointing a stubby finger at McGonagall. "Yes! Yes, yes, yes! Of course! That's what you want, isn't it, Minerva McGonagall? You want Cornelius Fudge replaced by Albus Dumbledore! You think you'll be where I am, don't you, Senior Undersecretary to the Minister and headmistress to boot!"

"You are raving," said Professor McGonagall, superbly disdainful.

"Potter, that concludes our career consultation."

Harry swung his bag over his shoulder and hurried out of the room, not daring to look at Umbridge. He could hear her and Professor McGonagall continuing to shout at each other all the way back along the corridor.

Now, the FanFiction begins... I am not JK Rowling, but I hope you enjoy the piece.

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.*.*.*. UMBRIDGE'S CAT TRAP .*.*.*.

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She left the office infuriated and making her heels sound loudly at every step. How dare that damn woman talk to her like that in front of a student?!

Since she had arrived to Hogwarts she'd had to work hard in order to gain the professors' respect and the children's' fear; it had taken a lot of hours of detention and many new rules and bans. She knew that getting Dumbledore definitely out of the castle would be a difficult job - and yet, it had been quite easy -, and she thought that once she had accomplished that, she would have control of the entire school and all its inhabitants. She had been wrong.

She had underestimated one person, one insufferable disloyal witch that kept fighting her even now that she was the Headmistress: Minerva McGonagall.

She wished she could just dismiss her, just like she'd done with that incompetent Trelawney woman, but she had to admit that the Tranfiguration Professor, Head of Gryffindor and Deputy Headmistress had an excellent record, so there was no way she could justify firing her to the Ministre.

She had to find another way to rather make her change her loyalty or get rid of her. Etherway, she couldn't let things like they were; she feared that if Minerva wished to call an uprising in the school everybody would follow the Deputy's orders instead of the Headmistress herself.

As she turned the corner of the hall, she tripped with something and almost fall down. As she recovered her balance she noticed a cat standing at some distance, turning around to hiss at her before it ran away.

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As soon as Umbridge, the new Headmistress, had left her office, professor McGonagall had tidied up her desk and left in her animagus form. A walk around the castle grounds without worrying about anyone annoying her about essays due-times, classes schedules and specially, the lady in pink, was exactly what she need to calm down her nerves.

As she elegantly walked down the halls, she spotted Umbridge at the end of the corridor and grinned - if it is possible for a grin to show up on a cat's face. She ran towards her and passed between her fat feet, only making her lose her balance for a moment. She had imagined her falling face-down to the stone floor like a flat pancake but she failed, and hissed at the old toad angrily before continuing her way down the hall.

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"Filch!" Umbridge yelled at the old man when she saw him leaving some classroom.

"Yes, Headmistress?" he asked, turning around with Mrs. Norris on his arms.

"Your filthy cat just almost made me fall down," she said in the same tone she talked to the students during the detention time, "it wouldn't hurt for you to give her a bath and teach her some manners."

"I'm sorry, Headmistress, but Mrs. Norris has been with me all this time," he said.

"Are you sure?" she asked, "because I don't like lies, Mr. Filch, you know very well."

"I am not lying, Headmistress," he insisted.

"If it wasn't yours, then whose cat was it that I found on the corridor?"

"Well, I only know of one cat who would dare go around the school on its own with my Mrs. Norris around..." Argus Filch muttered, "McGonagall."

"I didn't know Professor McGonagall had a pet cat in the school..." Umbridge said with some kind of amusement, thinking that every pet had to be reported and, if that was actually the case, and her Deputy was breaking the rules then...

"Oh, no," Filch interrupted her wonderful thoughts, "it's not her pet, it's she herself. Professor McGonagall is an animagus."

"What?" she exclaimed in surprise, and after standing in front of the silent old man for a moment while the information sinked in her mind, she left in a hurry.

Minerva McGongall an animagus! A cat! How could such an infuriating witch be able to transform herself into the most beautiful creature of the world? And most important, why did she ignore that fact? Maybe Minerva was an illegal animagus, oh, that would be such good news!

She headed to her office, and as soon as she reached it, Umbridge began to search into her files. Minerva's folder appeared soon, and a copy of her official papers as an animagus was in it, so that had been another false hope.

The new Headmistress let her body rest on her armchair while she looked at her dearest cats moving in the decor plates hanging on her wall. They were all so cute and sweet, joyfully playing in the little spaces, calm and quiet, never disturbing her...

Dolores Umbridge stilled her back on her seat as she gasped.

Maybe... If only...

She took her nails to her mouth as she thought about it, about that great idea that had just hit her; the ultimate way to get rid of Minerva McGonagall in a way nobody would ever find out.

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Minerva decided it was time to go back to the castle after the sun hided behind the mountains. She came in through one of the dungeons windows, and climbed the stairs up with that agility she only had while being in her cat form. The halls were practically empty, since it was almost dinner time.

When she reached her office, the door opened on its own to let her in. Which was her surprise when she realize she wasn't alone. Umbridge was sitting on her desk, aiming her wand down at her, and before she could react, before she had the time to transform into her human body and protect herself or fight back, the old toad muttered "obsidio incantatio" and nothing happened.

Minerva grinned - if grins do show on cat's faces -, thinking that Umbridge had failed on hexing her, and tried to transfigure herself back to her human form, but she couldn't. After a couple tries she looked up at the Headmistress, who was now standing in front of her, and her smirk gave her an idea of what was happening. She had somehow trapped her in her animagus spell.

When she saw Umbdrige walking towards her and bending down to pick her up she jumped over her and tried to escape, but the door wouldn't open this time. Minerva then jumped on the bookshelf and climbed it to the very top, but soon she felt herself being magically pulled down.

"Now, now, pussycat," the Headmistress said holding her on her arms and petting her furry back, "you must behave now, or I will feed you to the thestrals."

Minerva scowled at the woman who, knowing her new pet would escape as soon as they stepped on the hall, decided to use her privilege of being Headmistress and disapparated.

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TO BE CONTINUED...