The Convenant

5 families of witches were being hunted down by regular families during the Salem Witch hunt during the 17th century. The 5 families all consisted of male witches. The all have this thing, called The Power. Every generation of males had it. They call the male witches, "The Sons of Ipswich". The problem is, the four sons were born, along with a girl witch, but the fifth son, is lost. What happens when the fifth son appears?