In order to avoid the danger of destruction caused by a full-scale nuclear war, the world has introduced a new technology, Pain Free. It aims to stabilize the human mind by wirelessly connecting the brain and the server to eliminate pain.

Vogu Ranba, a soldier in the Republic of the Illi Federation, learns that his college sweetheart, Gaada Meri, now a dissident terrorist with an anti-Pain Free agenda, has robbed a classified material. Vogu was assigned to take command of the pursuit team, but he was defeated and taken prisoner by Gaada and her sister's special skills and manifestations. There, he learns the true danger of Pain Free.

Vogu, who had a transmitter implanted in his brain and was destined to die for betraying the government, entrusted his care to the Second Vogu, an artificial lifeform copied from his own brain. Thus, as the leader of the anti-Pain Free nation of Ethor, Second Vogu will fight to change the world.