As Easter approaches, Hermione begins to worry about exams, while Harry and Ron merely try to keep up with the tremendous amount of homework assigned. One day, Hagrid comes upon them studying in the library. They bombard him with questions about the Sorcerer’s Stone. He invites them to come and talk to him later but says he does not promise that he will reveal anything. They visit Hagrid’s hut later, and Hagrid tells them he does not know what else is guarding the stone besides the three-headed dog. He does tell them which teachers cast spells to guard the stone. He adds that he will never give out any information on how to bypass the dog.
Hagrid shows the students a dragon egg that he won in a poker game the previous night. Dragons are illegal, but Hagrid wishes to raise one anyway. Later, Harry gets a note saying the dragon egg is hatching. Excitedly, he and his friends rush over to Hagrid’s to watch the dragon’s birth. The children realize that Hagrid must get rid of this dragon, which Hagrid names Norbert, before he grows too big. They decide to write to Charlie, Ron’s older brother, who is studying dragons in Romania. Charlie agrees to help them and arranges for them to meet some of his friends to take the dragon away. The plan is set for the children to meet Charlie’s friends at midnight one Saturday atop the tallest tower of the castle. They take the invisibility cloak and sneak up carrying Norbert. Charlie’s friends come and take the dragon away. As they descend from the tower, they forget to wear the invisibility cloak, and Filch catches them.