Searching for his brother, Ryota stows away on a boat belonging to a criminal alongside two other teenagers. The group shipwrecks on Letchi island and discover the Infant Island natives…

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,…

During WWII, Germans obtain the immortal heart of Frankenstein’s monster and transport it to Japan to prevent it being seized by the Allies. Kept in a Hiroshima laboratory, it is…