Japan is facing a serious crisis. This is not about its ageing population and environmental problems but money – something that has been heard of but does not draw much attention. The country’s debt exceeds 1 quadrillion yen and it is still piling up. Prime Minister Ejima Takamori (Kusakari Masao) gathers four of the best finance officials including Suo Atsushi (Mizobata Junpei), Nakakoji Rumi (Takahashi Maryjun) and Negoro Isao (Horibe Keisuke). He announces that annual government expenditure will be halved for the sake of the country’s future and a project named Operation Z is formed. The largest expenditure is social security-related expenditure followed by tax money allocated to local governments. It will be impossible to reduce the general account expenditure by half without keeping these two items close to zero. Will the Operation Z members’ intentions get through to the people?