Francisco Manoel da Silva, 19th century, gun-toting Brazilian bandit known as the Cobra Verde, is unknowingly hired by the owner of a sugar plantation to keep his slaves in check, but instead, the Cobra manages to sleep with the landowner's daughters and impregnate them. In revenge, the owner sends the Cobra on a dangerous mission to sail to the West coast of Africa and reopen the slave trade, and the Cobra wages war with a local tribal king.