A ship carrying plutonium collides with a floating atoll off the eastern coast of the Philippines, one of many incidents occurring throughout the area. As the anomalous formation approaches Japan, a team of scientists led by Naoya Kusanagi (Akira Onodera) discovers orihalcum amulets and a stone slab covered in Etruscan alphabet on the atoll. During the investigation, the atoll suddenly quakes, destroying the slab and throwing the scientists into the ocean. One member of the team, Marine Officer Yoshinari Yonemori (Tsuyoshi Ihara), sees the eye and tusk of a giant turtle.