Introduction to the episodes of "Dark Currents"; Introduction to the plot of "Dark Currents" episodes 1-25 and the grand finale; Cast list. College Student Success Network. College Student Achievement Network.

Undercurrent Episode Plot Introduction, Undercurrent Plot Introduction from Episode 1-25 and the Grand Finale, Cast List.

Zhang Shengqiang - Captain of the Haitian City Police Force received a report saying that someone was conducting a drug transaction at the Taojiazhen Cement Factory, so he set off with two team members to investigate. At the same time, Zhang Shengqiang's wife (Deputy Captain of the Economic Investigation Team), Li Qiang, suddenly received a phone call from a stranger telling her that Zhang Shengqiang was in danger. She quickly warned Zhang Shengqiang to be careful, but it was too late. From two high vantage points, two gunmen simultaneously opened fire on Zhang Shengqiang, causing him to fall into the blood-soaked ground.