Driven by a haunting past, FBI Agent Sidney Stone confronts her most chilling case yet: a string of brutal murders in the foster care system, marked by cryptic origami clues. As she peels back layers of deception surrounding a seemingly benevolent charity, she unearths a conspiracy so vast and twisted, it threatens to upend everything Sidney holds true.

FBI Agent Sidney Stone is no stranger to darkness, but her latest case plunges her into an abyss deeper than she ever imagined. When a series of brutal murders rocks the foster care community, Sidney and her partner Alex Kane find themselves on the trail of a killer whose M.O. is leaving origami figures. The figures are made from an unusual textbook about child protection laws.

When they learn the program director of a charitable organization called New Hope ordered several copies of the book, Sidney and Kane pay them a visit. Turns out all murder victims were enrolled in programs at New Hope, which is backed by powerful people. They start to suspect the killer they're hunting is some sort of avenging crusader.

As the investigation deepen, the agents find themselves facing a terrifying truth - the very charity meant to protect children may be the true monster behind it all.