Madison McCall is the younger sister of Scott McCall. She ran away from home when she was 6 because she was tired of always being alone. She's found on the side of the road by Sam and Dean Winchester. They started to train her while also making her go to school like a normal kid. That was 10 years ago though. Today along with the Winchesters, she is one of the most feared hunters in the United States. When the boys and her friend Bobby gets a call from one of his friends, he automatically sends them to help. They go to Beacon Hills to help on both a demon and an angry spirit case. She enrolls in the local high school to gather info for the boys. When the Winchesters and Madison have to go let the local pack know that they are in town, she doesn't expect to see her parents and brother there. Imagine her shock when she finds out that her brother is one of the things she hunts.