Lee Jin-Pyo (Kim Sang-Joong) and Park Moo-Yul (Park Sang-Min) worked as bodyguards at the South Korean President’s home the Blue House. While the president and other high ranking public officials were visiting Myanmar an explosion occurs there set off by North Korean agents. The explosion did not harm the South Korean President, but other South Korean officials were killed.

To retaliate for the killing, five high ranking South Korean officials plan a covert operation to go into North Korea and kill North Korean agents. Without the president’s knowledge, bodyguards Lee Jin-Pyo and Park Moo-Yul gather men who will take part in the dangerous mission.

The men will be dropped near the North Korean coastline and then enter North Korea to carryout their assassinations. For their return, Choi Eung-Chan (Cheon Ho-Jin) promises to have a submarine waiting for them to carry them back to South Korea.