Disc is a refugee of Rayon, home to woolies and changelings alike. He's seen the first defeat of Polly and Esther. He's taken home a bobcat, after changing into a wooly. And after posing as said bobcat to foil Polly and Esther's plans himself, he was ready to return to Earth. However, when heading to his destination, he suddenly accelerates through a wormhole and crash lands near a changeling hive. However, he learns just what hive he is actually in.