The Digital World has been duplicated.
The left half of the train station leads to the real realm, but the right leads to a copy. But the copy isn't exact. Instead of having the same Legendary Warriors, the Spirits aren't exact replicas, creating ten new warriors. A group of kids has been called to hold these Spirits, as the duplicated world is being threatened by an unknown force. James, Emi, Haroi, Jimmee, and Tay have seen the light side of this new planet, though another quintet of kids, Mayumi, Kaori, Hayato, Navi, and Nya, have seen the dark. Balancing the sides out is the job of Niah, Nova, Kurt, Ophelia, and Electra. In order to bring peace to the Digital World, the fifteen must find a way to work together, though this is a much larger problem than expected.
But this is no problem for the Demi-Warriors of the Digital World, right?
{4th and final book in the Digimon: Dark Worlds series}
Four years have now passed since the Shadow Triad was defeated by the Digidestined. While everyone has found their own paths in life, portals between the Digital and human world have opened up all around the country, Digimon making their new homes in the human world. The arrival of the Digimon creates a mix of happy reunions, new friends, and conflict, as both sides struggle to adjust to this sudden change.
...Meanwhile, in the Digital World, a parasitic infection is spreading that threatens the fate of both worlds. New Digidestined will be thrusted into intense, heart wrenching battles and conflicts. Older, veteran Digidestined will have to deal with slowly losing their powers. All our Digidestined will team up to fight against the ultimate battle, for a chance for both humans and Digimon to finally live together in harmony.
Will the Digidestined be able to defeat the infection, and save both worlds? Will humans and Digimon finally be able to live in true harmony? Either way...
...The fate of the future rests in their hands.