Watch Soap2day. Elizabeth of Valois is promised in marriage to Don Carlos of Spain, as part of a peace treaty between the two kingdoms. They meet and fall in love – but no sooner have they declared their love than news comes that the terms of the treaty have changed: Elizabeth is to marry Carlos’s father Philip instead. Politics and religion are dangerously entwined in Giuseppe Verdi’s Don Carlo. Performed on November 30th, 2016, at the Opéra national du Rhin, Strasbourg.