The Captain gets a life insurance policy and gives it to his wife. In gratitude she makes him a pie. The Katzenjammer Kids play a trick on the Captain.

Mary Linden (Mary Astor) is the secretary who is the unheralded power behind successful executive James Duneen. He takes her for granted until rival Wales tries to take her away from him.

Gaira, a humanoid sea beast spawned from the discarded cells of Frankenstein’s monster, attacks the shores of Tokyo. While the Japanese military prepares to take action, Gaira’s Gargantua brother, Sanda, descends from the mountains to defend his kin. A battle between good and evil ensues, leaving brothers divided and a city in ruins.