Alex Thomas was the man in charge of protecting the president but, when the time came to fulfill his duties, everything just went wrong. His conscience haunted by a bullet, and his devotion to his country stronger than ever, Alex teams with a seasoned reporter to navigate a treacherous web of lies, unlocking a dangerous conspiracy, and enter a deadly world in which skilled assassins and highly-trained ex-special ops lurk in every shadow.

A crook decides to bump off members of his inept crew and blame their deaths on a legendary sea creature. What he doesn't know is that the creature is real.

A high priest tries to force a young beauty to marry a pearl trader who is masquerading as the god Balu.

A disgraced merchant marine officer elects to stay aboard his sinking cargo ship in order to prove the vessel was deliberately scuttled and, as a result, vindicate his good name.

海に降りた謎の飛行物体を調べていた健一とヘレン、そして海洋学者の父親たちの4人は、怪光線に照らされ、宇宙船内に捕らえられてしまう。やがて彼らの前に女の姿をしたジグラ星人が現われ、海洋汚染で住めなくなった母星から地球に移住するためやって来たと語る。女は東京に大地震を起こし、人類に降伏を迫る。地球最大の危機に正義の怪獣ガメラが飛来するが、宇宙船の中から巨大なサメのような深海怪獣ジグラが姿を現わす。