On an island in the world, in this prosperous independent city, some dead humans who have been abandoned by the world are sent every day. This is called the ancient Roman athletic city. Under the absolute rule of the world's nobles, there are only two ways for the humans in the city to be free. Life or death. When only one person can leave, when the former brothers stand on the opposite platform, how will Rossi and Liang Sheng make a choice.