The first day of the end of the world.

Sam, a Gryffindor, gets in trouble with her childhood friend Richie, a Ravenclaw, for casting a spell on there teacher, McGonagall, turning her into a frog, and she has not yet changed back
Alx, a Slytherin, got in trouble with his friend Chara, a Hufflepuff, after a Slytherin/Hufflepuff couple dare them to run out of class screaming "POTATOES".
The four are forced to go to the Hogsmead to meet up with Professor Flitwick to discuss there punishment.
THE HARRY POTTER SERIES DOESN'T BELONG TO ME.