A. wished in a previous thread for a plot summary and a cast of characters for Knight of Cups, and ScreenDaily and Belerofonte deliver. The former offers a brief, cryptic synopsis of the film:

Once there was a young prince whose father, the king of the East, sent him down into Egypt to find a pearl. But when the prince arrived, the people poured him a cup. Drinking it, he forgot he was the son of a king, forgot about the pearl and fell into a deep sleep.

Rick’s (Christian Bale) father used to read this story to him as a boy.

The road to the East stretches out before him. Will he set forth?

Casting confirmed (so far) after the jump.

Rick: CHRISTIAN BALE
Nancy: CATE BLANCHETT
Elizabeth: NATALIE PORTMAN
Joseph: BRIAN DENNEHY
Tonio: ANTONIO BANDERAS
Helen: FREIDA PINTO
Barry: WES BENTLEY
Isabel: ISABEL LUCAS
Karen: TERESA PALMER
Della: IMOGEN POOTS
Fr. Zeitlinger: ARMIN MUELLER-STAHL
And the voice of BEN KINGSLEY