A futuristic world where robots have become popular, Tae-pyeong is possessed by a robot body in an unfortunate accident. He meets Nana, whose life is threatened by her evil uncle, who killed her brother to take over the company. The story of a robot who sacrifices his entire body to protect a child in danger.

National track star Na Aeri, and her eternal rival 'Hany' join, the two participate in a special event race called 'Street Run' through the city's alleys, where they face off against the rising comet-like newcomer 'Rapid Ju'.