Vesper Montgomery, a teenager with the power to manifest people's fears, who enters a dangerous, underground fighting tournament called the Tournament of the Unraveling for a chance to rewrite her own past after an incident where her powers harmed her family. Aided by a human fighter, Sam, she must master her dangerous abilities to survive the competition, which offers a life-altering "unraveling" as its prize. The story blends contemporary fantasy, magic, cage fighting, and a compelling romance, as Vesper and Sam, each with their own past tragedies, form an unlikely alliance to win the tournament and their respective "unravelings".