In the near future, accompanied by the discovery of the net world, Digital World, the Digital Monster, or Digimon, was found. By the effort of Prof. Daimon Suguru who was the top researcher of Digimon and Digital Monster, the behaviors of Digimon were being studied, and they found that there were ferocious Digimon. The government organized DATS (Digital Accident Tactic Squad) to cope with these Digimon. Daimon Masaru, the only son of Prof. Daimon, was spotted and recruited as the member of DATS, and fought against Digimon with Toma and Yoshino.
an extended description!