There were three vicious drug dealers living in the forest. They were rampant and named themselves with the most poisonous snakes. Red-faced Mongoose was a scout assigned to trace these "Vipers" and to take soundings in Caoluo Street of Nanla Mountain. Unexpectedly, his connector was killed and his identity had been exposed. A battle of life and death began, and he had to fight against these "Vipers" by himself with wits and courage…