Due to changes in ocean currents, shark activity appeared near a certain diving area, but the traces are unknown. The hungry shark is ready to move, waiting for an opportunity to start a merciless killing. Doctor Shen Xin was invited.

The Tiger Security Team of the Storm Security Company is responsible for security and rescue work. Luo Xinglie is punished for accidentally injuring a hostage during a rescue mission. He gets reduced to a security officer and gets no reward for the mission. At this time, the Tiger Team receives a new mission, hired by the International Peace Foundation, to escort a truck full of water purifiers and a large number of crop seeds to the villages of Sakiya for civilian assistance. However, due to the invasion of the non-government organization in Sakya, some areas are in war. The team is likely to encounter fighting, and the unknown danger is gradually approaching.