Two penniless orphans, Black and White, struggle to survive on the mean streets of Treasure Town. When a megacorporation threatens to tear down the town to build an amusement park, Black and White engage in the fight of their life.

An industrial section of Japan got the name of “Yentown” as many immigrants come to make money and hope to go home rich. A small group of people in Yentown try to work together to survive—Ageha, a young girl with no family; Glico, a sex worker; Fei Hong, a poor immigrant from Shanghai; Arrow, an ex-boxer from the US; and Ren, a mysterious guy who seems to know too much about guns. Fortune shines upon them when they find a cassette that will get them rich, but along with money, trouble will always follow.