Camille Gardener is a grieving--and angry--mother who, five years after her daughter's death, is still obsessed with the privileged young man she believes to be responsible. When her rash actions draw the attention of a secret group of women--the collective--Camille is drawn into a dark web where these mothers share their wildly different stories of loss as well as their desire for justice in a world where privilege denies accountability. Fueled by mutual rage, the collective members devise and act out retribution fantasies via precise, anonymous, highly coordinated revenge killings.