Kang Jin, a high school student, battles debt collectors and the harassment of Nam Young, a model student with a hidden agenda. His life changes when he finds a lost envelope of money belonging to Rang, using it to confront Nam Young’s girlfriend, Da Young. But when Nam Young retaliates by stealing the money and threatening him, Kang Jin turns to Rang, who reveals his knowledge of the debt-collecting world. Together, they dive into the dangerous world of loan sharks.
