Challenge of the Two Headed Monster

Daisaku and Minami happen to help a one-eyes man BF members are chasing. According to the man's story, they are trying to kill him as a traitor because he became frightened by the inhumanity of the syndicate and quit it. After taken to Azuma's headquaters, the man tells him that three children have been imprisoned by BF members in their secret base in a cave at the foot of a mountain. Daisaku and Minami rush to the scene with the man as their guide. They enter the cave and find the children, but they are startled to hear that a two-faced monster engraved on a rock is alive. When they are trying to run out, the one-eyed man points a gun at them. He turns out to be Black Dia, new head of the Japanese branch of the syndicate. They realize they have fallen into his trap, but it is too late.