A man wakes up in a hospital bed with no memory of who he is or anything else. To his shock, he discovers that he is Kuroda, the Prime Minister of Japan, known for having the worst approval ratings in the country's history, reviled by the public for his relentless pursuit of money and power. After being struck by a stone during a speech and falling unconscious, Kuroda develops amnesia. To avoid chaos, his aides conceal his condition from both the public and his family. Unaware of his true identity, he must suddenly pretend to be the fully functional Prime Minister, facing a whirlwind of trials.