When Rubi Malone, a gun-for-hire, agrees to fix a wealthy man's problem by tracking down and bringing back his wayward son, she figures it'll be a cut-and-dry job. She figures wrong. The work turns out to be far more tangled than expected, and the man who hired her isn't who he claims to be. Now on the run and hunting the man who betrayed her, Rubi leaves a massive body count in her wake.