Three years has past from Taichi's adventure, but a new virus arrives in the peaceful DigiWorld. Due to the virus' special power, Agumon and others can't evolve. At the time, Veemon, one of the new type Digimon who is able to evolve into many types of Digimon using a Digi-Egg. Newcomer Hikari is partnered with Veemon, and along with her friends Takeru and Daisuke they venture into the DigiWorld.