[Harry] and [Ron] discuss the recent events, and particularly their effect on [Percy]. They then decide to go talk to [Hagrid], with the help of [Harry]'s [Invisibility Cloak].
Startling Revelations in Hagrid's Hut
With some difficulty [Harry] and [Ron] manage to sneak out of the castle and get to [Hagrid's hut]. There, [Hagrid] is extremely nervous, greeting them with a crossbow, and says little. Before the boys can ask any questions, though, there is a knock on the door.
With [Harry] and [Ron] hiding under the [Invisibility Cloak], [Dumbledore] arrives with [Cornelius Fudge] to tell [Hagrid] he is being taken to [Azkaban] - and their arrival is soon followed by that of [Lucius Malfoy], announcing that [Dumbledore] is also being removed from [Hogwarts]. As they leave, [Dumbledore] announces that he has not truly left [Hogwarts], and [Hagrid] lets [Ron] and [Harry] know they need to follow the [spiders].
Chapter 15 - "Aragog" - In which tension mounts in Hogwarts as everyone fears another attack - except Draco Malfoy, who is enjoying the situation. Acting on Hagrid's hint about following spiders, Harry and Ron go into the Forbidden Forest, find the Ford Anglia, are captured by acromantulas, learn more about the Chamber of Secrets, and are rescued by the car.
As summer approaches, security is intense around [Hogwarts] and things feel wrong to [Harry] without [Hagrid] outside the windows. [Harry], meanwhile, keeps thinking about the final words he heard from [Hagrid] and [Dumbledore].
In [Potions] class, [Malfoy] brags about his father's removing [Dumbledore] from [Hogwarts] and asks [Snape] to apply for the [Headmaster] position. [Malfoy] continues gloating throughout class, and makes disparaging comments about [Mudbloods].
In [Herbology] class, [Ernie Macmillan] apologizes to [Harry], who accepts but stamps it out quickly when [Ernie] suggests [Malfoy] might be behind the attacks. Then, [Harry] notices [spiders] scurrying toward the [Forbidden Forest] - and he and [Ron] decide to take [Fang] and follow.
In [Defence Against the Dark Arts], [Lockhart] brags he knew all along that [Hagrid] was behind the attacks, and [Harry] and [Ron], in their anger, decide to follow the [spiders] that night.
A Conversation With Aragog
After the [Gryffindor common room] empties out, [Harry] and [Ron] duck under the [Invisibility Cloak], fetch [Fang] from [Hagrid's hut], and go after the [spiders], deep into the [Forbidden Forest].
Deep in the [Forbidden Forest], [Harry] and [Ron] start as they hear something moving - but soon relax when they discover it's the [Ford Anglia]. They realize they've lost sight of the trail of [spiders], but [Ron] is soon distracted by something bigger.