Digimon Data Squad (2006)

We pick up with our heroes and the challenges faced by the members of D.A.T.S. ("Digital Accident Tactics Squad"), an organization created to conceal the existence of the Digital World and Digimon from the rest of mankind. A boy, Marcus, becomes friends with a stray Digimon, Agumon, who escaped from and is wanted by D.A.T.S. Now fugitives on the run, they encounter a matured stage Digimon, Kokatorimon, and a battle ensues. Satsuma, a D.A.T.S. commander, witnesses the fight and recruits Marcus and Agumon into the organization to help protect the human world from the dangers of Digimon.