Line Walker (2014) : 1x23

SIU-KA and FOON-HEI are being attacked by their rivals on the street. CHEUK HOI sneaks into the police station to carry out investigation but the spy discovers him. The spy tries to kill CHEUK HOI but he falls into CHEUK HOI's trap accidentally and he loses his personal computer. CHEUK HOI tries to rescue SIN-CHING and they hide away in the ruins. CHEUK HOI worries that SIU-KA will be upset for nobody is carrying investigation on FOON-HEI's injury. He tries to investigate the case with KA-KEUNG and they finds the attacker successfully. After the incident, all gangsters know that KA-KEUNG has taken revenge for FOON-HEI and this enhances his status in the gang. The police is looking for SIN-CHING but they fail to find her. SIN-YAN is very worried. HO-KAN tries to calm her down by exchanging information with CHEUK HOI secretly. He helps SIN-YAN to talk to SIN-CHING on the phone and SIN-YAN is deeply touched.