The Chinese Navy's Jiaolong ("Sea Dragon") Assault Team is famed for its skill in getting the job done. After its success in rescuing a cargo ship hijacked by pirates off the Somalia coast, the team is assigned an even more perilous mission. A coup in a North African republic has left local Chinese residents in danger, circumstances further complicated by a terrorist plot to obtain nuclear materials. The situation could prove fatal to the hostages and disastrous to the entire region, and presents Jiaolong with a challenge that threatens the very existence of the team and its members.