Clawing your way up through the minor leagues of tennis to reach the ATP tour is difficult enough. But when unseen match fixers threaten and bully players to throw matches so they can cash in on rigged bets, it becomes a matter of life and death.

Caught between unyielding pressure and their own ambition, a handful of aspiring players fight back. The odds are against them, and the stakes couldn’t be higher as they take on the gamblers, all the while fighting to earn their place in the top tier of international tennis.