In blood-soaked Tudor England, twice married, accomplished, and educated Katherine Parr (Vikander), reluctantly agrees to become the sixth wife of the tyrannical King Henry VIII (Law). Her consent to marry him carries great personal risk, given that her predecessors are either vanquished, beheaded, or dead. When Henry appoints her as Regent, the nation’s ruler during his absence when he departs to fight overseas, he lays a dangerous path for her. Henry’s courtiers, suspecting she’s sympathetic to radical Protestant beliefs that have taken root in the kingdom and are a threat to their power, scheme against her and cast doubts upon her fidelity to the increasingly ailing and paranoid King.
