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Set during the end of World War II, Major Mashiba (Masato Sakai) and others receive an order to hide 200 trillion yen worth of treasures. These treasures are to help rebuild the country after the war. 20 girls are mobilized to carry out the mission ...

In 1932, as Korea is occupied by Japan, Chu Fucheng, an important figure in the city of Jiaxing, China, is asked to help in hiding exiled Korean nationalist Kim Gu.

The concept of the show is to select a group of promising rappers from open auditions and whittle down that number down through various assignments, with contestant survival dependent on the "producers," a group of experienced rappers who also serve as mentors. Eventually the rappers are divided into small teams headed by those producers. From there each contestant will face a different team's rapper in head-to-head single-elimination rounds where survival in the competition is dependent on votes from a live studio audience. In the third season, there was also a "Revival Round" in which contestants previously eliminated had a chance to continue in the competition.