Cassian, azriel, rhysand and feyre are flying through the forest when they see huge shakes in the trees. They fly to the ground and land, something is wrong. They're in the human lands flying to see feyres human sisters, yet there's a fae beast beyond the wall. They wait on the outskirts of the trees waiting to fight. The trees rustle some more and a young human girl comes tumbling through. Her dress is torn and muddy and she's panting. She looks up and feyres eyes widen before feyre rushes forward against rhysands will. The young girl is feyres little sister.