A young woman wanders barefoot in the lush Aokigahara (青木ヶ原), also known as the Sea of Trees (樹海 Jukai) region of Mt. Fuji, and suddenly falls into a cavern, awakening in an icy cave full of large eggs. When one of the eggs start to hatch, she goes into hysterics and flees until she is discovered by a construction crew. Before falling into a coma, the girl babbles about what she saw to a reporter. Her story airs on a televised news report that is seen by geologist Takashi Ashizawa. Upon hearing about the fossilized egg, Takashi sets off to Mt. Fuji to find it.