In the future, people have built the floating city Zeron, where the best scientists work on creating androids, artificial human beings who look the same way as real ones. Harvest Corporation is the biggest company that creates androids. The hero of the game is a scientist named Wirg, the father of the first game's protagonist. His work is to train the androids after they have been created. One day, the company building is attacked, and Wirg has to escape. He is saved by a nun and brought into a small town in the middle of wasteland, where his adventure begins.