Shock Wave (2017)

After years undercover, bomb disposal officer Cheung Choi-san faces his nemesis, Hung Kai-pang, who threatens Hong Kong with deadly bombings. Cheung's fight intensifies when Hung hijacks a tunnel, holding civilians hostage. Racing against time, Cheung must outsmart Hung to save lives, even if it means sacrificing his own, while navigating personal relationships and facing devastating losses in the line of duty.