G4 is assigned the task of escorting some foreign VIP. To gain promotion, Au Yeung Chung and Mung Tik-hak just cannot wait to show off their abilities.

Police crack down on racing on mountain roads. Gang boss Tai Ching-yan is nearly caught.

Au Yeung Chung starts his new job at AI. But he realizes his old adversary Tik-hak is also reassigned to Traffic.

Au Yeung Chung and Wing-hei team up to investigate the Ka-fai car crash case. To find Ka-fai’s death note, Wing-hei uses some excuse to approach Sheung Siu.

Au Yeung Chung runs into Sheung Siu at Hung Wai-sum’s grave. Sheung Siu scolds him for being the other guy who ruined other people’s family.

Wing-hei is under pressure as people keep questioning him about his tactics while he was on duty. Fortunately, Au Yeung Chung offers him comforting words.