Grace MacCaullay, the sole survivor of a brutal "game" that resulted in the deaths of husband and in-laws, learns that her victory comes with a price: now, the wealthiest and most influential families on Earth have to kill her in a new game - or risk losing their power and fortunes. Grace refuses to participate but is left with no choice when she learns that her younger sister, Faith, has also been marked for death and must protect her at all costs.