[h-] Harry Potter is in the [3] basement of the [-ai] high school. He is battling a muggle 每 hitwoman hired by Lord Voldemort to take him out. He casts a spell on the fire sprinklers, which promptly start 氵 spraying water out at an insane rate. The basement turns into a miniature 海 sea. They stand on some floating boxes of SAT books and continue their battle on this turbulent 海 sea.