Retired special forces soldier Su Nan goes undercover to investigate a transnational crime syndicate, but unexpectedly gets caught up in a military brass member's treasonous conspiracy alongside Qin Yuwei, a female doctor. The two discover that the brain-control chip developed by Chang Kong Technology threatens global security. While being hunted, they expose General Zhang and the evil plans of the Dark River organization. From urban street battles to restricted military zones, Su Nan's ironclad combat skills and Qin Yuwei's medical expertise make a perfect team. In the final submarine showdown, they thwart the "Hub Protocol," which aims to control the minds of all humanity.
