Harry Potter had dreams or visions-about Lord voldemort developing a revolting body-the meanest life form and committing murder and planning to regain his power with more murders-specially Harry’s.. He was soon taken to the burrow from the Dursley’s by the Weasleys to watch Quiditch world cup . But, a band of wizards turn rowdy after drinks and attacked muggles. Things worsened when Dark Mark (symbol of Dark Lord, skull with snake protruding out from mouth as tongue)was shot to the sky by someone. It scattered the attackers but everyone was in fear. The ministry wizards cast stunning spells at the direction and found a house elf clutching Harry’s wand below the spot were the mark was seen.The elf belonged to Barty Crouch the chief of Magical Law enforcement. Crouch punished the elf by freeing it.
At the school, there were surprises-that year the Triwizard tournament was to be conducted for which Hogwarts and two other schools namely Drumstrang and Beaxbuttons were participating too.The new Defence against Dark arts teacher was Alastor Moody(Mad-eye because his one eye was magical and its vision can penetrate solid objects) -the ex-Auror(Dark wizard catcher ) and friend of Dumbledore .Every one of age who wished to participate should put their names to a goblet of fire which selects most eligible one from each school for only one can participate from one school.The champions were- Viktor krum-Durmstrang(a famous international Quiditch player),Fleur Delacor-Beaxbuttons &Cedric Diggory-Hogwarts .But suddenly the goblet shoot a fourth parchment which contained the name of Harry.This caused heated arguments and finally Harry was consented to participate . Ron was angry because like everyone else he also believed that Harry himself put his name in the goblet.The competition consisted of three tasks which are stipulated at different days of the year.The First task was to take a golden egg from a group of dragon eggs.Sirius informed that Karkaroff,the Durmstrang head master was a death eater and beware of him.
Moody demonstrated the use of unforgivable curses using spiders .They are-the Imperius curse(which forces others to obey the orders of caster),the Cruciatius curse(which causes inexplicable pain) and the Avada kedavara(the killing curse) .Moody tipped Harry to get the egg out of dragon’s clutch.Harry topped in the first task..Ron, stunned by his performance and understood that it was someone’s plan to finish Harry.Barty Crouch was found missing.The second task was to rescue something which is taken from the champions by the merpeople.Ron was took from Harry.
This time also help came to harry in the form of Dobby, the house elf who gave Gillyweed-which when chewed one can survive in water for one hour.Harry found Ron untied him.After the task,Harry was still ahead.Barty Crouch who was missing for many days entered the grounds and wanted to see Dumbledore,but was missing again when Harry brought Dumbledore. Harry (thanks to his journey into Dumbledore’s memory in pensieve) learned that Crouch had a son who had the same first name and Crouch himself ordered him to Azkaban as he and other two death eaters tortured two aurors-the Longbottoms(Neville’s parents) just after Voldemort’s power was lost.
The third task was a maze and the first one who collect the cup placed at center of the maze will win the tournament.Harry and Cedric together touched the cup and was taken to a graveyard.It was where Lord voldemort’s father was buried.Cedric was killed by Dark Lord and Harry was tied at the tomb’s head.Worm tail made a dark potion (ingrediants are bones of dark lords father,Flesh (Right hand of Wormtail) and blood from Harry), put Voldemort in the cauldron. Dark lord regained his body and claimed to be more powerful because he got Harry’s blood.Then he summoned the death eaters & got ready to kill Harry in their presence.But Harry fought well and escaped out of death by touching the portkey(the cup) with Cedric’s body. Everyone was in shock and sorrow because of Cedric’s death but Moody took Harry to his office and asked him togive the details.He was happy and announced he was going to kill Harry.But Dumbledore saved Harry in time and Barty crouch(junior) was revealed as the effect of polyjuice potion(which helps one to be exact duplicate of other).The real Moody was imprisoned in his own trunk .The death eater confessed when fed with truth potion.Barty Crouch(senior) on his dying wife’s request disguised his son as her using polyjuice potion and took him home and controlled him using imperius curse.The winky was in charge of his care when Crouch went to office.At the world cup, young Barty(who was under cover of invisibility cloak) fought the curse and stole Harry’s wand and cast the Dark Mark.Crouch(senior) sacked winky for her negligence of duty and took care of his son without going to office.But Lord voldemort arrived at his house,imprisoned him and freed Young Barty.Barty and wormtail overpowered Moody. Barty became Moody's double and joined Hogwarts,put Harry’s name in goblet ,killed his father when he was about to tell everything to Dumbledore ,guided Harry through all the tasks and ensure his victory so that the cup which was turned to a portkey could send him to Voldemort.The ministry was called and the Dementor which was bought by Fudge,the minister killed the Death eater and minister refused to believe that Voldemort has returned.Dumbledore however,informed the students the truth and ordered his men including Snape , Sirius and Hagrid to be ready as the fight has begun at last.