In women’s hockey, there has only ever been two superpowers: Canada and the USA. Over the last 20 years, the Canadian and American women’s hockey teams have dominated their sport, trading gold medals back and forth. But when every game is a new chapter in an old story, familiarity also breeds contempt; a rivalry this long-standing is bound to become personal. Regardless of any bad blood, in battling each other these two teams have taken the game to new heights, defying the world’s expectations of women’s hockey. Told from the perspective of the players themselves, ON THE LINE is a first-hand account of what it’s like to be a part of the greatest rivalry in sports.