In Johnny Ma's thrilling debut feature, a Chinese taxi driver finds himself plunged into a Kafkaesque nightmare where no good deed goes unpunished. Beginning as a gritty social-realist drama before u-turning into a blood-drenched noir, Old Stone follows the repercussions of a car accident in a society where life is cheap and compassion is ruinously expensive.

When a drunken passenger causes Lao Shi to swerve and hit a motorcyclist, the driver stops to help the injured man. When no police or ambulance arrive he drives the victim to the hospital, checks him in and finds himself liable for the man's medical bills. The repercussions of Shi's selfless act expose a society rife with bone-chilling callousness and bureaucratic indifference. On the verge of losing his cab, his job and his family, Lao Shi (in a magnificent performance by Chen Gang) has to resort to desperate measures to survive.