Motivated by her daughter's tragedy, Faye Yager is a vigilante on a mission to protect sexually abused children when the justice system fails; Faye's work hiding families lands her in the crosshairs of law enforcement.

As Faye's criminal trial begins, the origin story of the Underground is told and more of Faye's complexities are revealed; Christine, a former child of the Underground, looks back on her experience, and more details about Faye's past come to light.

Faye's trial continues; an examination of the "Satanic Panic" craze that swept America and how the effects rippled throughout Faye's Underground; Kaylee and Christine reflect on the allegations; Faye's trial reaches its dramatic conclusion.

In the aftermath of the trial, Faye finds herself and her network on the defensive with a growing number of enemies and critics; April faces a trial of her own; a newspaper article leads to what could be Faye's biggest conflict yet.