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 an underground 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. When he arrives at the small village bordering Fuji's Saiko Lake, Takashi immediately heads into the heavily forested Jukai when a sudden earthquake occurs and is knocked out. He later awakens in his father's old cabin near Saiko Lake, and discovers that he was rescued by Shohei Muku, an old friend of the family. Takashi quickly gets back to fossil-hunting and heads toward the Jukai once again. Meanwhile, other bizarre things start happening around the Saiko Lake community. A young couple in a paddle boat disappear without a trace, an injured diver is pulled from the lake, and livestock begin to mysteriously vanish. Takashi begins developing a theory that a dinosaur is alive and well in Saiko Lake. His theory gains credence when Junko stumbles upon a headless horse-corpse lying in the road, and Takashi later finds it lodged in a tree while taking photographs of some strange tracks in the mud. The following day, Takashi sits in his father's cabin and develops a possible theory as to what type of creature could have killed the horse and placed the remains in a tree for safe-keeping. He decides that the creature must be a living Plesiosaurus and shares his minimal proof and hypothesis with a very sceptical Shohei. His theory proves correct when a Plesiosaurus really does appear and devours some local pranksters during a festival outside. The creature continues to subtly terrorise the community and devours two more women, including Junko, whose death is witnessed by Akiko and their pet dog. Takashi and Akiko soon discover the presence of another prehistoric beast, a Rhamphorhynchus, which also proceeds to terrorize the community. Eventually, the two prehistoric beasts come face-to-face with the Plesiosaurus eventually gaining the upper hand against the Rhamphorhynchus, despite losing an eye. Mt. Fuji then finally erupts, sending the dinosaurs into a fiery chasm below as the ground gives away. Akiko almost falls to her death, before Takashi is able to grab her by the hand. The film then ends, leaving the two protagonists' fates ambiguous.
Kyoryuu: Kaicho no densetsu (released in the U.S. as "Legend of Dinosaurs and Monster Birds", "Dinosaurs: Legend of the Strange Bird", and "The Legend of the Dinosaurs"), the 1977 Junji Kurata Japanese science fiction (sci-fi) kaiju battling rubbery monsters thriller starring Tsunehiko Watase, Nobiko Sawa, Shotako Hayashi, Tomoko Kiyoshima, and Fuyukichi Maki. Directed by Junj Kurata,Screenplay by Masaru IgamiIsao, MatsumotoIchirô Ôtsu. Starring: Tsunehiko Watase, Nobiko Sawa, Shotaro Hayashi. Music by Masao Yagi. Cinematography: Sakuji Shiomi, Shigeru Akazuka. Edited by Isamu Ichida. Produced and distributed by Toei, Japan.