The year is 20XX. Tough but idealistic Koga has just joined the Tokyo branch of SHWD, the Special Hazardous Waste Disposal unit responsible for eradicating mysterious biological weapons that were left behind...

Ryu Soma's grandfather developed "Alcoroids," robots that can be used for many purposes. Although Ryu has no interest in developing new models, she loves repairing Alcoroids and treats them as if they were...