Digimon Story: Lost Evolution

Digimon Story: Lost Evolution is a Digimon video game announced for the Nintendo DS with a 2010 Release for Japan.

The Digital World was once a paradise but something unusual has happened. Digimon were battling and they disappeared one after another. Around this time, a scary group of tamers were helping Digimon grow stronger. With the Digital World in crisis an Agumon set out to find a tamer of its own, in the real world.

The player character, who has recently moved into town, is watching a fireworks display when they notice a strange light in the night coming down near a hill. They go out with their friends to see what was there and meet Agumon. As Agumon is looking for help the group is attacked by three mysterious people named Uno, Dos and Tres. They attack and the player uses Agumon to defeat the group’s Numemon. After the battle the evil trio abandons their digimon and run away. Two of the friends comfort the Numemon and are then kidnapped when the group returns for it. The player agrees to help the Agumon solve the mystery of the Digital World in order to find his/her friends.

Source: TheGamesDB