Most people use subway to commute between their work and home. However, to Zzhang, Boknam, So-hee, Mazingae and Master King, the subway is a completely different world, a place of hope, but at the sametime, a cruel reality. Bokname endlessly searches for his long lost brother while begging for money in Zzhang's territory. Sohee, expecting Zzhang's child, dreams to form a perfect family with Zzhang. Master King is a drug addict whose ultimate goal is to get laid one day. Zzhang who sells drugs to China religiously saves money to bring his mother to join him. However, one day, Zzhang discovers that Master King has run away with his saving......

We look very carefully on the buddies(aengbeol) who have lived estranged life with many accidents in the society.