After ten years, a loyal employee is framed for embezzlement, then murdered by his employers, only to be reborn as their youngest son, with a yearn for revenge guiding his hostile takeover.

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.