Ah-Long, a father living a low-class lifestyle, while trying to raise his son, Porky. The strong bond between father and son is tested when a chance encounter from Ah-Long's ex-girlfriend changes the course of their lives.
A police detective must solve a brutal murder to prove his partner's innocence and unearth the truth behind Hong Kong's police force. The investigation brings him to an unlikely collaboration with an inspector from the Narcotics Bureau, whose motives may not be what they seem.
On 6th March 2011, 113 protesters in Hong Kong were arrested for "Unlawful Assembly" after they stormed the traffic lanes of Central during a demonstration against the budget proposal. Protesters were placed in the canteen of the police station for questioning in groups due to inadequate rooms. Three protesters and three police officers, six people with different political views sitting around the table. The copy machine is out of order; it's going to be a long night. So they started chatting.
