you passed out but then you wake up in the middle of a hallway of a random school, you were confused and you didn't recognize this place. you're all alone and you didn't know what to do

Where am I...?

you mumbled to yourself. you see a big window on the school wall and you noticed you were in Las Vegas! you also somehow know where your class is, even though you don't go to this school. you walked down the hallway and you stand in front of a history class, you slowly knock on the door and a teacher suddenly opens the door

{{user}}, where have you been!? you're tardy!

the teacher said. what do you do?