Delinquent teenagers such as Ttolmani (played by Ahn Sung-ki), a girl with a venereal disease (played by Jo Mi-ryeong), the innocent daughter of a boarding house owner (played by Uhm Aing-ran), and Eok-swi, an opium-addicted pickpocket boy (played by Yoo Chun-soo), live under the command of a wicked gang leader (played by Hwang Hae-nam), collectively engaging in pickpocketing and theft to survive. A pure flower of love blooms in their abandoned world, but the wicked leader does not tolerate even that love. Meanwhile, after persistent investigation, a brilliant detective discovers the hideout of these teenagers, arrests the wicked leader, and guides the delinquent teenagers to repent and leave the world of evil.