Having been recruited by an elite international peacekeeping group called the World Organization of Mega Powers (WOMP), Inspector Gadget is now Lieutenant Gadget, and fights crime with a pair of mechanical assistants called Gadgetinis, who are small robot versions of the Inspector created by his niece, 12-year-old Penny (due to Brain retiring from active duty).

Kim Min Gyu has wealth and success, but lives an isolated life due to his allergy of people. He then meets and falls in love with a girl who is pretending to be a robot for her ex-boyfriend, a genius robots professor.

Nam Shin is a son from a family who runs a large company. After an unexpected accident, he falls into a coma. His mother Oh Ro-Ra is an authority on brain science and artificial intelligence. She creates an android named Nam Shin III which looks like just like her son Nam Shin. The android pretends to be Nam Shin and he has a bodyguard So-Bong.

Teams of amateur robot fighting enthusiasts battle it out over a series of rounds in a huge purpose-built arena aiming to become the Robot Wars Champion.

Researchers are pushing the boundaries of their fields to develop more accurate and efficient responses against international terrorism.