Melchiade Coletti

A little boy is abducted by ruthless bandit gang leader El Cachal after Cachal and his men butcher the boy's family with the exception of his father. Johnny Ashley, the gunslinger father of the boy, goes searching for his son. Alas, the boy has grown up to be a mean and vicious criminal.

An engineer has discovered a new special alloy for the construction of submarines and is about to launch it on the world market. To force him to give up the formula, his opponents kidnap his son.