近未来・２０２Ｘ年。日本経済は没落していた。総理大臣の鷲田（柄本明）は、内閣官房副長官・平（星野源）に命じ、「ウーア」を立ち上げる。ＡＩに選ばれた閣僚は、１７才の高校生“総理”・真木亜蘭（神尾楓珠）ほか若者たちばかりだった。３か月後、真木に憧れる茶川サチ（山田杏奈）らも移住し、「ウーア」が始まる。早速真木は議会廃止を提案。支持率３０％を切ったら辞任すると宣言する。１７才の帝国の幕が開く。
In the future year 202X, with Japan's economy in stagnation, experimental municipality Utopi-AI is inaugurated by Taira Kiyoshi by direction of Prime Minister Washida Tsuguaki. The city's "cabinet members" chosen by artificial intelligence (AI) unit Solon are all young enthusiasts, including "prime minister" Maki Aran, a 17-year-old high school student. Three months later, Sagawa Sachi, an admirer of Aran, relocates to Utopi-AI along with her family, and the experimental administration takes off. Aran immediately proposes to abolish the city council, and further vows to resign if and when his popular approval rate falls below 30%. The "teen regime" thus begins.
