Disclaimer – I know that the teachers and other adults in Hogwarts didn't attend Hogwarts at the same time. This is just a speculation about what would have happened if they did. I have tried to stick to the 'facts' as much as possible (most of them from Harry Potter Wikia) but the rest is just poetic licence. Please don't comment hate mail about how things aren't exactly correct because this is my fan fiction and if you don't like it then go and write one of your own!

Part 1 - The Train To Hogwarts

The train to Hogwarts passed unseen through the walls of the station, very similar to the way that people passed through the wall to platform 9 and 3/4. The steam from its engine puffed away into the sky, again unseen by the people in the surrounding fields due to the charm cast upon the entire train, meaning that both the train and the track were invisible to all but the wizards who rode on it.

Minerva McGonagall stared out of the window, watching the world flicker past in a haze of greens and blues. She loved travelling by train, especially when no one was there to disturb her. As the station vanished into the distance, the train clicking at intervals as it travelled along the track, she heard the sound of approaching feet. She turned to see a familiar group strolling down the corridor towards her. The person in front was infamous among the Hogwarts students, his brown hair cut with extreme precision, his eyes flicking through the people sat in each compartment. Tom Riddle came to a halt beside Minerva's compartment, smiling slyly as he opened the door; the rest of the group, known to all as the Death Eaters, craned their necks to see over him. Minerva scowled at them, which they found rather amusing.

"Well look what we have here…." Tom Riddle drawled "If it isn't Minerva McGonagall, all alone. Isn't that a surprise?"

Minerva gave a low cat-like growl, her eyes going slightly yellow. In a few seconds she sat there in the form of a large black cat, glaring at the Death Eaters with cold yellow eyes.

"Take a hike Riddle." She growled

Tom tutted, taking out his wand. He muttered a charm and a spark flashed near Minerva's paw, causing her to jump backwards. The Death Eaters laughed at the sight, nudging each other to goad Tom on.

"Move McGonagall, I think you'll find you're in our seat." Lucius Malfoy told her, moving to get his wand as well.

Knowing she was beaten, Minerva gave a hiss and jumped down off the seat and slinking out of the room and down the hall. She looked back from a few meters on, watching the group pile in, throwing her suitcases out into the hall.

"Hey, are you alright Minerva?" A voice asked behind her, she turned round to see a familiar face looking down at her. Hagrid stood there, his wiry brown hair falling past his shoulders in its usual tangled mat, his robes oversized despite his gigantic stature, a concerned look on his face.

"Oh I'm fine…" Minerva sighed, transforming back to human form.

"Who kicked your stuff out?"

Minerva nodded towards the door of her ex-carriage where Lucius was sticking his head out, laughing at them.

"Death Eaters." She told him

"Again?"

"Again?" Minerva repeated

"They threw Myrtles books out onto the platform earlier and then tipped a bin up over Quirinus in the corridor.

As they picked up the cases, lugging them down the corridor, Minerva tried in vain to smooth out the creases in her hat. A few carriages down Hagrid pushed open the door and, with some difficulty, squeezed through it into the compartment, Minerva following behind.

The compartment contained a group of people, each one friends to the end. On one side there was Molly Prewett sitting at the window end of the cabin, Sirius Black and James Potter sat opposite to her in a pile of chocolate frogs tearing them open and laughing as the frogs tried to escape. On the same seat, Myrtle was sitting hunched by the window in her drab, grey fashion and last but not least Lily Evans, looking rather pretty in the middle of the group who were all jostling for a more comfortable position around her.

As Minerva sat down, they all jostled for position, Hagrid moving over to offer her a seat. She kindly turned it down for a seat next to Molly by the window.

"I was wondering where you had got to" Molly said, relieved

"Yes…" said Sirius, "For a moment we thought you'd missed the train."

"I wanted to be on my own for a bit."

"We understand if you don't like being squashed in."

A few minutes later there came shouts and jeers from down the corridor and a loud crash. A second later Quirinus Quirrell ran up to the cabin, being followed by a swarm of enchanted rubbish from yet another litter bin, tearing the door open and bolted inside, slamming the door shut. The rubbish bounced against the window for a minute or so before the charm wore off and it fell to the floor in a pile.

"Death Eaters again?" Sirius asked

"Every day…" Quirinus sighed, picking a banana peel off of his shoulder and removing crumbs from out his hair. Hagrid moved over and he sat down in the small space, wringing his hands in his normal nervous fashion.

"They really have it in for us this term." Molly said "We're just going to have to keep out of their way."

"Which is like trying to dodge a bludger…" Quirrell muttered to himself

"Oh what's the use? We can't avoid them. Might as well just give in…" Myrtle sighed

"We can't do that!" James laughed "That's just letting them win."

"We can't all be popular you know" Myrtle snapped "Just because you are the prize Seeker and Sirius the most popular boy in school."

"People respect the Marauders!" James grinned, proceeding to do the secret handshake with Sirius.

"Well we can't all be respected like you." Hagrid told them before Myrtle could snap again "Some of us have to fight for survival."

Myrtle, Quirrell and Lily all murmured their agreement.

All of a sudden a person opened the door, causing Quirrell to jump in expectation of another volley of rubbish; instead Severus Snape stood there, looking a bit sheepish.

"I… uh… don't suppose there is any room?" He asked

"No. Shove off Snivillus." James told him, Sirius grinning behind him. "This cabin's full."

Severus gave James a long, hard stare and turned away.

"Wait, Severus!" Lily called out, standing up. "Ignore them. Come on, let's go and see if there are any any-flavour-beans left on the lunch trolley…" She said, taking his arm and leading him down the corridor.

James looked dismayed for a second, before motioning to Sirius to leave, standing up and rushing out of the cabin to catch up with Lily; after a few seconds hesitation, Sirius followed.

"Good riddance…" Myrtle sniffed. Hagrid moved over to take up the bigger seat, allowing the others to gain leg-room.

A few minutes later and there was the sound of a stampede of footsteps and muffled laughter and the Death Eaters, Tom Riddle in the lead, approached the cabin. They group fell silent, watching him hostilely. Myrtle drew her legs in and turned to face the wall.

"Just wanted to say hello…" Tom Drawled "Did you enjoy your rubbish Squirrel?"

Quirinus said nothing, continuing to look at the floor and wring his hands. Tom, never liking being ignored, clicked his fingers in his face to try and get his attention; when that failed he drew out his wand, muttering a jinx spell quickly. Suddenly, Quirinus shot out his wand and shouted a spell, causing Tom's wand to fly out of his hand. In retaliation, Tom shot out a hand and muttered a spell, freezing Quirrell's arm in place, twisting it round against its will until it was straining in its socket. Quirrell yelled in pain as the arm threatened to snap.

All of a sudden, Hagrid, leapt up.

"EXPELLIARMUS!" He screamed, throwing out his wand hand, sending Tom flying backwards into the group of Death Eaters behind him, freeing Quirrell's arm.

As he struggled back to his feet, the group were now all standing up, wands brandished. Tom sneered at them as the Death Eaters drew out their wands as well.

"TOM MOLOVO RIDDLE!" A yell came down the corridor; they turned to see Professor Galatea Merrythought, Defence against the Dark Arts Teacher, striding up towards them. "And what do you think you're doing?"

Tom Riddle waved his cronies down the corridor in retreat, pausing just before he went himself to glare at the group.

"You'll regret this, filthy mud-bloods" He spat before making off down the corridor.

Professor Merrythought looked into the cabin, eyes like thunder.

"You're to see the Headmaster as soon as you leave the train. Underage magic is bad enough, but on moving train…." She paused, sniffing the air.

"You used a counter-jinx didn't you?" She glared at Quirrell who froze, before shaking his head frantically.

"No Professor. I wouldn't dare…"

"Hmm…" Merrythought paused, and then glowered "You're lucky I didn't see any of the spells or you'd be out of Hogwarts before you could blink…" She warned them before continuing on in her pursuit of the Death Eaters. After she left they all breathed a sigh of relief and collapsed back into their seats.