Io, robot

Mac, Nathan's C-3 robot friend, on behalf of the Robot Assembly, tasks Agent Alfa with shedding light on the disappearance of Doctor Calvin Sung, creator of the C-3 and defender of the cause of mechanical men. But C-09 has also been kidnapped by someone who keeps him locked up in the laboratory where Sung is held prisoner. When Nathan goes to the doctor's house in search of clues, he is confronted by another suspicious-looking Doctor Sung...