The apocalypse arrives, countless worlds invade, and technology grinds to a halt.
Ye Yuan is reborn with the Red Alert System. He stockpiles resources and keeps churning out troops...
"The first wave is Digimon? They want to take over Blue Star, too?"
Ye Yuan's eyes light up. Rubbing his hands together, he says, "I'll take them all! I don't even have a pet yet!"
"Huh? Dragon Ball? The Earth Saga? My office doesn't have any decorations. That won't do! I'll take them all!"
"Huh? Journey to the West? Monsters are showing up? They have mines? Heh heh heh, I'll take them all. Then I can open a zoo."
"Who else is there?"
"Bet you didn't see this coming: my Red Alert Empire can be upgraded without limit and combine the strongest troops from countless worlds!"