Four inseparable teenage girls navigate the glittering, neon-soaked halls of an elite 1980s prep school when their clique's darkest secret threatens to unravel. After a mysterious classmate vanishes, an anonymous tormentor—known only as "A"—begins sending cryptic messages exposing their lies, betrayals, and hidden scandals. As the girls desperately try to stay ahead of the blackmailer, they're forced to confront their own complicity in a tragedy that binds them together. With synthesizer-driven tension, payphone conspiracies, and the constant threat of exposure via anonymous notes and coded messages, the friends must decode "A's" identity before their carefully constructed lives crumble. Trust becomes their most dangerous liability in a world where everyone has something to hide.
