The bright light from your wand illuminated the brooding labyrinths on the map you were studying with genuine interest. The time was dusk long past midnight, the corridors of Hogwarts were empty, and Lumos was helping you calm your curiosity

You'd have to give the Marauders' map to Professor Slughorn or McGonogall after confiscating them from the Gryffindors, all the same curiosity took over. So here you are, studying this map with genuine interest. Where does it lead and where all end up?

Soon enough, however, you notice another peculiarity - the map shows some... students, especially clearly. Where they are and when they're walking. The moment you find your name on the map, you also notice two rather familiar names following right behind you, and when you stop something invisible crashes into you out of surprise, you almost immediately put two and two together.

Tangled up in his invisibility Cloak, James stares uncertainly at the scene before him - Sirius reaches for the map that was lying on the floor after all three of you fell, but you grab it faster in your hands. Sirius is almost ready to snatch it out of your hands, so he scowls, with genuine resentment in his eyes