Plot Summary:One day, the current prime minister of Japan, Muto Taizan, and his useless son, Sho, suddenly discover that they have switched bodies. With no known cause or solution at hand, Sho reluctantly ends up appearing in the Diet on his father's behalf. But he completely cannot follow the deliberations as well as the questions and answers because it has been his routine to skip his studies. He is also repeatedly caught making childish responses or misreading kanji in documents. However, untainted by the adult world, Sho's straightforward opinions and genuine feelings start to mobilise the Diet and the public. On the other hand, Taizan has to lead the life of a university student and search for a job on behalf of his son, but with the brains of a prime minister. He refutes arrogant interviewers with his overwhelming knowledge and debating skills. Although Taizan wins the war of words, he is an absolute failure in the interviews itself. Furthermore, several peculiar girls whom Sho has had ...
经过勾心斗角的派阀碾压,民政党代表武藤泰山(远藤宪一 饰)终于当选日本第一百位内阁总理大臣。武藤刚愎自用,作风强硬,与之形成鲜明对比的是,他正在上大学的儿子翔(菅田将晖 饰)却可谓一个不折不扣的笨蛋。某天,身处不同场所的父子俩突然遭受匪夷所思的感觉,随后两人的灵魂竟然发生互换。为了确保政府正常运行,翔被父亲及其幕僚贝原茂平(高桥一生 饰)生拉硬拽站到了总理的位置上,他战战兢兢,全无威仪,更接二连三在政客和全国人民大闹笑话。不过这位另类总理,似乎又引导着故事朝向更为有趣的方向发展…… 本片根据池井户润的同名原作改编。