The world has begun to collapse. The runaway Mainemon absorbs the Dark Evolution Tailmon and evolves into Ordinatemon with its powerful power. According to the idea of the World Tree, the real world will be swallowed by the Digital World. As despair approaches, the chosen children desperately move forward. Now that Taichi is gone, only Yamato can lead the team in his place. "We still have things to do to save the world!" Gabumon's words bring vitality to Yamato, and Agumon firmly believes that Tai will definitely come back. On the other hand, Constancy wants to deal with the out-of-control Ordinatemon and try to implement the final plan to interfere with the real world. In order to prevent the arrival of destruction, the chosen children and their partners fight desperately. "All the light is gathered on Mainemon..." The desperate Tailmon said to everyone. It's time for the children to make the final decision. What future will the chosen children choose? Now, adventure will evolve again.