Seven kids are transported to the Digital World, a strange place where digital creatures called "Digimon" reside. A group of Digimon soon befriend them and keep the kids out of harm's way. The children then become the Digidestined, or Chosen Children, which protect the Digital World from evil Digimon like Devilmon and Myotismon.
This is an old anime that i loved to watch as a kid, and rewatching it today it is still just as good. The story of a group of children transported to another world and then paired with creatures from that world. They entire point is to try to get back to the human world and they realize that along the way they must defeat stronger and stronger opponents in order to get back.