You've seen the commercials. Here is the untold story behind the clash of billion dollar companies that unleashed an unprecedented advertising war. From Sports Illustrated's Albert Chen comes the story of two companies whose battle unleashed a carpet bombing of advertising as they sought supremacy in an exploding fantasy sports and gambling market: In a time of gushing venture capital money, FanDuel and DraftKings turned into billion-dollar companies seemingly overnight - then, just as quickly, found themselves the target of FBI and Department of Justice investigations, and facing likely destruction. Chen tells the story of the improbable individuals behind the saga: An Irishman who knew nothing about American sports. A fantasy geek who felt it was his destiny to change the way fellow nerds watched the games they loved. A conflicted poker player. A mother of three in Scotland. In a character-driven narrative with excursions into the strange and unexpected, Chen takes us from casinos to board rooms, from Edinburgh to Wall Street to the Vegas Strip, to tell a sprawling and intimate tale of the new world that this group of accidental disruptors helped to create. It's a story of ideas and dreams, about a world of risk, luck, hubris, greed and redemption-a story for our high-stakes times.