Drug Sea Storm

When a new type of drug named Hongbing emerges in a Chinese city, Ma Zhiqiang, deputy captain of the city's anti-narcotics squad, goes undercover as a trafficker in order to investigate the drug's production and distribution. Thanks to Ma's findings, the squad is able to identify the man behind the operation, but their mission becomes much deadlier when Ma's cover is broken.
(Source: CATCHPLAY+)