In 1773, seventeen-year-old apothecary Oliver Carter moves to Boston and begins helping the Sons of Liberty in their rebellion against British tyranny in the colonies as well as discovering that his boss, Dr. Benjamin Church, is a traitor to the cause.
Sarah Wright and her father Ephraim move to Salem Village, Massachusetts, in 1692, where they witness the Salem witchcraft hysteria, during which Ephraim is arrested and Sarah must try to help him escape from jail.