The Tournament begins with the first event, in which the four champions must each battle a dragon to retrieve a golden egg. Upon using the Accio spell to summon his broom, he flies out of the arena. The dragon breaks free of its chain and chases Harry through the Hogwarts grounds, where it runs into a stone bridge and falls dead. Harry gets the egg, which, when opened, will reveal a clue about the second task. When Harry opens it, though, only a horrible screeching is heard. They are soon informed of the Yule Ball, a Christmas ball held during the Triwizard Tournament. Ron and Harry find it hard to get dates to the ball, but finally get the Patil twins to join them, while Hermione goes with Viktor Krum, stunning everyone with her suddenly beautiful appearance at the ball. Ron is so jealously enraged at seeing Hermione with Krum (formerly his idol) that he attacks her and accuses her of "fraternizing with the enemy". The ensuing argument leaves Hermione in tears (in the film version only).