Many pages in the book are almost a repeat of the first three books . the new thing which we have for the audience is Voldemort is on the move again. At the same time , Harry escapes from his summer “imprisonment” at the Dursleys’ to attend the Quidditch World Cup with the Weasley family and Hermione. This is the place where many international witches and wizards had gathered at the Cup, and chaos erupts when the “Dark Mark” suddenly appears in the sky.
Back at Hogwarts for the fourth year, only a few remain concerned about the Dark Mark. Everyone’s attention has been diverted by the news of the Triwizard Tournament—a magical contest between the wizarding Champions of the three largest magical schools: Hogwarts
Harry is too young to be chosen as Hogwarts’ official school champion, but still he finds a way to enter him in the contest anyhow. Because once chosen, he must participate, and it is soon clear that whoever entered him did so intending him harm.
Through the year-long competition, champions complete three magical tasks, hoping to win honour for their school and a monetary prize for themselves. Along the way, readers discover that the Dark Mark and the Triwizard Tournament are not unrelated after all. Also, something is fishy (again) about the new professor for Defense Against the Dark Arts ,Hermione goes on a campaign to free the house elves from slavery, and everyone gets fed up with muckraking journalist Rita , who seems determined to ruin Harry’s life.
Finally the tournament ends with a twist, and the victory celebration has hardly begun before Harry finds himself in another battle with Voldemort. Rowling delivers on her promise that a well-liked character will die. Once again, Harry escapes with his life, but the end of this story spells more-than-usual concern for the future, one of the Tournament tasks.