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.
An adventurous and daring sailor sets sail to the castle of an ailing king to stop an evil premier, hungry for power and wealth, from succeeding the throne and marrying the king's beautiful daughter. Along the way, with the help of some courageous rebels and a lustful wizard, he must overcome the powers of a bewitching witch, a band of ruthless pirates, and the castle's Imperial guards. He must also free those kidnapped into slavery and restore the king's reputation.
After being mistaken for an Interpol agent, a man who was just supposed to go on vacation gets mixed up in a war between two gangs intent on winning the favor of a notorious arms dealer.
