The novel “Rambo on Song-Bo”, created by the writer Conrad Graf, is brought to the attention of the reader, based on the idea of the American novelist David Morrell, creator of a series of novels about John Rambo. Starting from David Morrell’s cycle, Conrad Graf creates his own image of John Rambo, conducting him through the new world of adventure he created.

John Rambo has a new mission to free his friend's brother Ralph Perry. James Perry is kidnapped by a secret society of crocodile people who demand a ransom from the syndicate in diamonds, and threaten him with ritual murder if their demands are not met...