Sophia was an angel of the Lord. She was one of the only angels that still trust Castiel after he sneaks Metatron out of heaven. Metatron steals her grace and tells her if she gets his grace back he will give her her's back. Staying loyal Sophia keeps on fighting him till eventually she passes out. Sam and Dean are trying to deal with the darkness and the weird sickness taking over a town. Castiel still fighting the dog attack spell and being tourchered by angels.