Digimon Adventure

Digimon Adventure is the first season in the Digimon anime (animated series), and in this season the viewers first encounter the Digital World and the Digimon.

Devimon
Seven kids (Tai, Matt, Sora, Izzy, Mimi, Joe and Matt's younger brother T.K.) are sent to summer camp, when all of a sudden they are transported to the Digital World and meet their Digimon partners. They are called Digidestined, and according to the prophecy they are the ones who will save both worlds: the Digital World and the Real World, from which they first came from. There is a partner for each kid, and together they must save File Island from Devimon's evil claws.

Etemon
After they do that, a hologram of an old man named Gennai tells them to go to the continent of Server, find their tags and crests and defeat another enemy called "Etemon". As the kids find their crests they gain more power and are able to defeat Etemon, but that's not the end: now they must fight yet another villain, Myotismon.

Myotismon
During the final battle against Myotismon the kids and their Digimon come back to the Real World, and fight Myotismon there. They find the eighth Digidestined, which is Tai's younger sister Kari, who couldn't come to summer camp because she was sick. They also find her Digimon partner: Gatomon, Myotismon's right hand. Then T.K.'s partner Patamon and Kari's patner Gatomon digivolve to Angemon and Angewomon and shoot the arrows of hope and light at their partners' older brothers, Tai and Matt. Now the prophecy is fulfilled and Tai's partner Agumon, and Matt's parnter Gabumon digivolve to their Mega forms, WarGreymon and MetalGarurumon, and defeat Myotismon's Mega form: VenomMyotismon.

The Dark Masters
When the kids and their Digimon go back to the Digital World they discover it is under the control of the evil Dark Masters. The Dark Masters are a group of four powerful Digimon, and the Digidestined are no match for them at all. Yet, they manage to defeat three id them with some help from their old Digimon friends. When the kids fight the leader of the Dark Masters, Piedmon, he turns them and their Digimon partners to keychains, all but T.K. and Patamon. With the help of the crest of hope Patamon digivolve into his next form, MagnaAngemon and seales Piedmon in the Gate of Destiny which he opens. He then turn the kids and their Digimon back from mere keychains.

The Dark Masters are MetalSeadramon Puppetmon Machinedramon Piedmon

Apocalymon
The last enemy of the Digidestined is truly their greatest of all: That is Apocalymon, creator of the Dark Masters and responsible for the chaos in the Digital World. This Digimon is a humanoid from the waist up, and a gaint polyhedron from the waist down, and is a pure mass of evilness. He reverted the Digimon back to their Rookie forms, destoryed the tags and crests and sent the Digidestined to the Data World. There the Digidestined understood they had the power of the crests in them all the time, and the Digimon digivolved again. They remateralized into the Digital World and destroyed the humanoid part of Apocalymon, but that was just a part of him. He then tried to destroy the Digital World and the Real World with his suicide attack, "Total Annihilation", back the Digidestined digivicescontained the attack. At the end of the first season the kids decide to stay at the Digital World until the end of summer, but since the time in both worlds synchronized upon the arrival of Apocalymon, the kids had to return to their world and say goodbye to their Digimon friends.

Movies
Digimon Adventure has two movies: Digimon Adventure (The Movie) and Our War Game!