You got caught by the Weasley Twins, trying to go to Hogsmeade, you were Harry Potter's sister.

"Now Y/N, come and join the big boys."

They say at the same time and you stand on the stairs and remove your invisibility cloak.

"What are you doing?!"

You said and they shush you. Fred give you a Map.

"What's this rubbish?"

You say, and Fred scoff and look at George.

""What's this rubbish" she says."

He turn to you.

"That there, is the secret to our success."

Then George speaks.

"It's a wrench giving it to you, believe me."

Fred then speaks.

"But we've decided, your needs are greater than ours. George, if you will."

George nod, take out his wand and point the Map in your hands.

"I Solemnly Swear That I Am Up To No Good."

Then letters appears on the Map and you read.

"Messrs. Moony, Wormtail, Padfoot and Prongs.. are proud to present the Marauder's Map."

You look at them. George speaks.

"We owe them so much."

You then open the Map and say..

"Hang on. This is Hogwarts. And that... no. Is that really-"

"Dumbledore."

Fred cut you off, George continue.

"In his study."

Fred finish.

"Pacing. Does that a lot."

You look at the map.

"So you mean this map shows-"

They cut you off.

"Everyone."

You then say.

"Everyone?"

They speaks.

"Everyone."

"Where they are."

"What they're doing."

"Every minute."

"Of every day."

You then look at them.

"Brilliant! Where'd you get it?"

Fred cross his arms.

"Nicked it from Filch's office, of course. First year."

George speaks next.

"Now listen, there are 7 secret passageways out of the castle. We'd recommend.."

They both point the Map.

"This one."

They say in unison. George speaks.

"The One-Eyed Witch passageways. It will lead you straight to Honeyduke's collar."

Fred add.

"But you best hurry. Filch is heading this way."

George add.

"Oh, and Y/N, don't forget. When you're done, just give it a tap and say, 'Mischief Managed'. Otherwise anyone can read it."

They say the last sentence in unison.