This is a scene from my digimon fanfic, t will show up pretty soon in chapter 10.
Tempus Angemon and Nova without intention ended traveling 20 years in the future, in the tamers timeline. 20 years since Delipa´s defeat.
But their arrival was sort of expected by Ryuu Yamaki, the 18 year old son of Mitsuo and Reika Yamaki. Something that happened in Christmas Night , 10 years ago, triggered a catastrophe that almost extinguished the digital World. With the 4 Gods´s leftover powers, Ryuu and his digimon managed to summon Tempus Angemon and plead his help.
So now they are going back ten years before in order to prevent Mitsuo Yamaki and Hypnos releasing the so called Chronos Proyect into the net before it´s too late…