Fifteen-year-old girl Dotty Fisher is assaulted at a construction camp. In the wake of this incident, the construction workers form a vigilante group led by the hot-headed Frank Doran in order to find the person responsible for the attack. After the group erroneously assume that innocent Puerto Rican Raphael Infante is guilty of the crime, only one lone man named Alec Beggs dares to stand up to the angry mob.