Watch Monster Undersea 2 (2018) Official Trailer

While Jiang Yunfei and his wife were looking for Miaomiao, their missing child, on the Netherworld Ship, they were attacked by the Netherworld King and his henchmen. Jiang's wife and his accompanying adjutant were brutally murdered, and their bodies were ruined by Jiang Zuo and Jiang You. Only Jiang Yunfei was left alive. Many years later, Wang Dayan who is agile and clever lost his younger sister on the Devil Ship. Then she came across Jiang Yunfei, a Beiyang soldier, who had been eager to find his son on the ship. After many investigations, they learned that the disappearance of their families was related to the Netherworld King, so they launched a series of dangerous and unbelievable sea wars with the Netherworld King and his henchmen.