16 Episodes · Premiered July 1, 2019 · Ended August 20, 2019
After the nation's entire leadership is killed in a terrorist attack, the Minister of Environment is tasked with leading the country through the crisis for 60 days.
While driving with his family, Park Moo Jin sees that the unthinkable has happened at the National Assembly and soon finds his life turning upside down.
Surrounded by generals and officials clamoring over what must be done, Park Joo Jin decides to pursue a hunch despite opposition from his own advisers.
Han Na Kyung makes a startling connection after uncovering a clue. As a political rival incites public fear, Park Moo Jin weighs his options.
A survivor is found at the disaster scene. Cha Young Jin's briefing about approval ratings and presidential election polls makes Park Moo Jin uneasy.
Park Moo Jin's live interview alarms the public and the Blue House staff. Jung Han Mo questions Na Kyung's suspicions about Oh Young Suk.
As the staff tries to find ways to allay the public's growing fear, Park Moo Jin makes an unexpected suggestion. Na Kyung asks Yoon Chan Kyung for help.
Han Joo Seung returns to the Blue House, Na Kyung divulges a troubling detail to Han Mo, and Yoon Chan Kyung threatens Park Moo Jin with impeachment.
Young Jin thinks he's found his candidate. Na Kyung uncovers footage implicating Young Suk and urges Han Mo to brief Park Moo Jin before it's too late.
The staff tries to control rumours brewing around Park Moo Jin, but he remains reticent. Ji Yoon Bae tells Han Mo that he's the only one who can save him.
Park Moo Jin receives distressing information from an unforeseen source -- and is told not to trust anyone. Cha Young Jin still doesn't have his answer.
Kang Dae Han interrogates Na Kyung, who insists on briefing Park Moo Jin in person. The staff doesn't know what to make of Young Suk's actions.
Young Suk's opportunistic maneuvering doesn't go unnoticed. Choe Gang Yun fears that Park Moo Jin has made his choice. Na Kyung probes Young Jin.
Young Suk has cutting words for Park Moo Jin. Despite Joo Seung's counsel, Young Jin starts preparing his candidate. Na Kyung tries to assure Han Mo.
As his advisers wonder whether Park Moo Jin is making decisions as an acting president or as a candidate, Young Suk informs him about his intentions.
Park Moo Jin tries dealing with a military threat by taking a gamble on Lee Gwan Mook. Young Jin receives photos putting a candidate in a delicate spot.
With limited time left as acting president, Park Moo Jin and his staff scramble to solve the case -- but the mysterious tailor remains an enigma.
