Catherine of Aragon arrives in England to wed Prince Arthur, heir to the English throne, in a marriage contract intended to forge an alliance between the two nations.

Catherine is one step closer to the English throne with her marriage to Arthur but must navigate the challenges of a new relationship and a new court.

Catherine remains determined to become England's future Queen and makes plans to marry Prince Harry. Lizzie has a troubling premonition following a complicated labour.

As the nation mourns Lizzie's passing and Catherine works to secure her marriage to Harry, Henry shocks the family by announcing his intention to honour his wife's dying wish.

Catherine is faced with a dilemma - marry King Henry Tudor and immediately become Queen of England - or find a way to refuse and hold out for Harry.

The English throne seems within Catherine's reach, but an unfortunate twist of fate means that her future now lies in the hands of her unstable older sister.