The military of Country N was developing a secret weapon in their underwater naval base. They captured Princess Dora from Atlantis World to conduct their research. The Commander-in-Chief of Country B was entrusted by Princess Dora’s sister to bring her back alive and in one piece. The Commander ordered Clint Eastwood, the submarine commander of Country B, to lead his team to the rescue. Meanwhile, Country N developed a deadly submarine Shark No.1.

Could Clint get Princess Dora out safely?