Welcome to Earth, Population:5

What if someday, a horde of asteroids rained down on Earth. The whole world died, but Taiwan was spared luckily. Everyone else disappeared of the face of Earth. There were a few hundred people left on Earth, but they fought for food and resources so in the end only the strongest of the people survived. Five people were left and they decided to travel to other countries. Maybe it was coincident, but there were only five continents that they could live on. So the men had one continent for each person. The people built automatic robots to hunt and farm for them, each person had to trade to each other to survive, because there were things they could not grow or hunt. They were too busy to fly all the way over because they had to manage the robots in case the robots went haywire. So they sent planes with set destinations. The people managed survive for a 26 years, but then the robots did went haywire and killed them all.