[3] The film was produced by Bona Film Group and directed by Dante Lam, and it stars Huang Xuan, Yu Shi, Zhang Hanyu, and Du Jiang.

[4] In the near future, the Chinese Navy intercepts critical intelligence—an advanced super-submarine is secretly plotting a top-secret military operation against cities along China's southeastern coast.

In response, China deploys its latest submarine, Longjing, to coordinate with the elite Jiaolong Squad in a high-stakes mission.

The battlefield beneath the ocean is fraught with danger as the squad faces relentless traps, and the submarine engages in a series of intense confrontations with the enemy.

As they maneuver through ambushes, they venture deep into the vast abyss filled with undersea volcanoes.