Also known as: モンスターファーム, MonsterRancher
Video game and anime series. Known outside Japan as Monster Rancher.
Monster Rancher is set in a world where monsters exist alongside humans. Monsters were created by God in ancient times, following a disaster that struck the world prior to continental drift. However, the monsters caused problems for humanity. As such God sealed them in "disc stones", small circular stone tablets containing their genomes, and entrusted humanity with them. However, as time passed, the disc stones became lost knowledge.
Eventually, archaeologists rediscovered a disc stone while excavating ancient ruins. They brought the disc stone to the Monsters' Temple, where the priests, using ancient summoning methods, summoned the monster in the disc stone back into existence. Monsters were reintroduced into nature and, for the most part, coexisted with humans. Eventually, monster owners and breeders began holding monster battles as a sport, which became popular worldwide, leading to official battle tournaments.