After deciding to use a wheelchair ( which he really does not need ) , he is befriended by a rugby player named Thunder , who teaches him how to be independent .
Their friendship is strained when Thunder realizes Bill is not really disabled .
After deciding to use a wheelchair ( which he really does not need ) , he is befriended by a rugby player named Thunder , who teaches him how to be independent , but their friendship is strained when Thunder realizes Bill is not really disabled .