Harry and Ron run into the school and are confronted by Argus Filch on the stairs. At night, Harry wanders the hallway and gets a bad feeling. Later, Harry sees a conversation between Tom Riddle and Dumbledore while he is viewing a memory.
Harry the the Gryffindor Quidditch team face off against the Slytherin team and Ron gets hit with some spell backlash and ends up spitting up slugs. The first year students are taught transfiguration by Professor McGonagall. Later, Harry finds another frozen student while he walking the hallway at night.