An explosion at the National Assembly kills everyone in the cabinet, leaving Park Mu-jin, the Minister of Environment, to become the next president. Park Mu-jin is a scientist-turned-politician who has no ambitions in politics, but as the acting president for 60 days, he is compelled to investigate the truth behind the attack. Based on the popular American series, Designated Survivor.

The Ministry of Time, a newly established government department, is gathering ‘expats’ from across history in an experiment to test the viability of time-travel. Commander Graham Gore (an officer on Sir John Franklin's doomed 1845 Arctic expedition) is one such figure rescued from certain death – alongside an army captain from the fields of the Somme, a plague victim from the 1600s, a widow from revolutionary France, and a soldier from the seventeenth century.