A story about the discord between two prisoners, pitted against each other through social circumstances: a mainland leader, Dragon, is blamed for the death of a fellow-inmate; and a Hong Kong local, Ching, is named as the squealer in order to cover up a murder committed by a sadistic prison officer and an unsavory mainlander inmate. The result--both Dragon and Ching are forced to become fugitives in order to escape the wrath of vengeance in-store for them from both sides; during the course of their escape, the two co-dependent "enemies" form a lasting kinship.