Once a legendary detective and a new mom, Mi-young, now works a desk job. But when overenthusiastic newbie Ji-hye is assigned to Mi-young's civil complaints team, the two female cops get caught up in a serious criminal case that triggers an action-filled comedic investigation.

A group of Korean tourists is taken hostage by an extremist Taliban group in Afghanistan. The Korean government dispatches Jae-ho, known as one of Korea's most skilled diplomats, in order to handle the situation. Once he arrives, he asks for the Afghan government's cooperation and uses every means possible to free the hostages. However, his efforts go in vain. Due to his failure, he's forced to work with Dae-sik, a special agent who is an expert on the Middle East. As they begin making their move to get to the Taliban, the first hostage death occurs. With nowhere else to turn, the two become unlikely allies in a race against time to save the rest of the hostages.