Yano Tadashi, son of Tetsu, receives the passport of his father who was killed in Rome. Tetsu happened to find a map and a coded message which indicate a hidden treasure somewhere in the Silk Road and he passed them to a dog which was in the underground cave. When the dog died, it ordered its three pups to bring the map and message to Japan. After Tadashi received them from the three dogs, his mother was killed by a air plane bombing and Tadashi has been chased by Guddonaito, a gangster organization. To help Tadashi, the three dogs, who have supernatural power and ability, struggle in various ways, but one day they quarreled among themselves and ...