I really hope that Emma Watson plays the wife of Ham, because if we go by the Bible, after the Ark lands, Noah gets drunk and passes out in a grape field. (Because those apparently survived the global flood) Ham and Shem find their father, who is stark naked and passed out drunk. Ham attempts to cover Noah, fearing for his pride and not wanting him to be embarrassed. God sees this, and punishes Ham. Noah wakes up, hears God's wrath, and thus Ham is Shem's slave for LIFE, and Ham's wife is then given to Noah, who proceeds to make more children with her for the rest of his life.
So basically, Ham's wife is getting a lot of sexy time and I would pay to see Hermoine getting taken to school Old Testament style.
/sarcasm