A powerful fox known as theNine-Tailsattacks Konoha, the hidden leaf village in the Land of Fire, one of the Five Great Shinobi Countries in the Ninja World. In response, the leader of Konoha, theFourth Hokage, seals the fox inside the body of his newborn son,Naruto Uzumaki, making Naruto a host of the beast;this costs Naruto's father his life, and theThird Hokagereturns from retirement to become leader of Konoha again. Naruto is often ridiculed by the Konoha villagers for being the host of the Nine-Tails. Because of a decree made by the Third Hokage forbidding anyone to mention these events, Naruto knows nothing about the Nine-Tails until 12 years later, when Mizuki, a renegade ninja, reveals the truth to Naruto. Naruto then defeats Mizuki in combat, earning the respect of his teacherIruka Umino.
Shortly afterwards, Naruto becomes a ninja and joins withSasuke Uchiha, against whom he often competes, andSakura Haruno, on whom he has a crush, to formTeam 7, under an experiencedsensei, the elite ninjaKakashi Hatake. Like all the ninja teams from every village, Team 7 completes missions requested by the villagers, ranging from doing chores and being bodyguards to performing assassinations.