<P> Harry learns that he is a wizard when he is 11 years old and enrols in Hogwarts School of Witchcraft and Wizardry . He befriends Ron Weasley and Hermione Granger, and is confronted by Lord Voldemort who is trying to regain power . In Harry's first year he has to protect the Philosopher's Stone from Voldemort and one of his faithful followers at Hogwarts . After returning to the school after summer break, students at Hogwarts are attacked by the legendary monster of the "Chamber of Secrets" after the chamber is opened . Harry ends the attacks by killing a Basilisk and defeating another attempt by Lord Voldemort to return to full strength . The following year, Harry hears that he has been targeted by escaped mass murderer Sirius Black . Despite stringent security measures at Hogwarts, Harry is confronted by Black at the end of his third year of schooling, and Harry learns that Black was framed and is actually Harry's godfather . He also learned that it was his father's old school friend Peter Pettigrew who actually betrayed his parents . </P> <P> The book opens with Harry seeing Frank Bryce being killed by Lord Voldemort in a vision, and is awoken by his scar hurting . The Weasleys then take Harry and Hermione Granger to the Quidditch World Cup, using a Portkey, to watch Ireland versus Bulgaria, with Ireland emerging victorious . There, Harry meets Cedric Diggory, who is attending the match with his father . After the match, Voldemort's followers attack the site, destroying spectators' tents and wreaking havoc . The Dark Mark gets fired into the sky, which leads to a panic since it is the first time the sign has been seen in 13 years . Winky, Barty Crouch Senior's house elf, is falsely accused of casting the Mark after she is found holding Harry's wand, which is revealed to have been used to cast the Mark, as Harry had lost it during the chaos of the Death Eaters' attack . Hermione, angry at this injustice, forms a society to promote the rights of house elves known as S.P.E.W. (Society for the Promotion of Elvish Welfare). </P> <P> At Hogwarts, Professor Dumbledore announces that Alastor "Mad - Eye" Moody will be the Defence Against the Dark Arts teacher for the year, and also that Hogwarts will host the Triwizard Tournament, with a prize of one thousand gold Galleons . However, only those over 17--the age of majority in the wizarding world--will be allowed to enter . It is the first time in 202 years that the Triwizard Tournament will be held . Students from Beauxbatons Academy and the Durmstrang Institute, other wizarding academies, will travel to Hogwarts, where they will stay for the year, in hopes of competing . At Halloween, the Goblet of Fire picks Fleur Delacour from Beauxbatons Academy; Viktor Krum (who is also the Seeker on Bulgaria's Quidditch team) from Durmstrang Institute; and Cedric Diggory from Hogwarts to compete in the tournament . However, it additionally gives a fourth name--Harry Potter--leading to suspicion and indignation from everyone and magically binding Harry to compete . Ron is jealous that Harry is once again in the limelight and refuses to speak to Harry . </P> <P> Hagrid reveals to Harry that the first task involves dragons, and since Fleur and Krum's headmasters are also aware of this, and will surely tell them in advance, Harry informs Cedric as well . At the task, Harry has to pass a Hungarian Horntail to retrieve a golden egg that contains a hint to the next task, which he does by summoning his Firebolt broomstick with the Accio spell, and finishes the task tied for first with Krum . Ron and Harry subsequently reconcile, Ron now understanding the full danger of the tournament . When Harry opens the egg, though, it merely shrieks loudly . Hermione then takes Harry and Ron to the school kitchens, where house elves work . There, they meet a distraught Winky, who is struggling to get over the loss of her sacking . They also meet Harry's old friend Dobby, who has been employed at Hogwarts to work in the kitchens; he is the only known house elf to appreciate his freedom, despite his hardworking nature . </P>

How old do you have to be to enter triwizard tournament