Keiko, Kenzo and Eji are visiting their friend Meera in the evergreen and serene state of Kerala, India. They mischievously set out for an underwater adventure in a Subscooter invented by their father. Mr Kimura. Midway the Subscooter breaks down and they discover an ancient temple covered in gold and jewels. However this temple carries a curse and now the curse has befallen them! A big large cobra starts to attack them. They are stranded in a dark chamber with a black cobra after them.