Jung Woo-Sung, Kwak Do-Won, Kim Kap-Soo, Kim Eui-Sung, Lee Kyoung-Young, Jo Woo-Jin, Park Eun-Hye, Ahn Mi-Na, Won Jin-A, Park Sun-Young and others
Plot:
A coup in North Korea forces an agent to defect to South with unconscious "Number One". While operatives from North hunt for both of them, the agent has to work with South Koreans to stop the nuclear war.
A former agent from the North Korean intelligence and a senior member of the South Korean security services conduct a secret mission to prevent the breakout of a nuclear war on the Korean Peninsula.