Athalie

“The Queen of Judah has gained her throne by eliminating the Royal Princes, but one is still alive and protected by the high priest. In a dream the Queen sees the young Prince as a king. She orders an assault on the Temple but when the Priest draws back a curtain to reveal the child king on his throne, she rushes from the scene believing it to be the fulfilment of her dream (incomplete).” - BFI.