Winter 1975, Parcy-sur-Serre.
Three years after a wave of murders that traumatized the town, Betty, a radiant teenager and passionate rock musician, is trying to escape her demons.

The sole survivor of the serial killer who murdered her mother, she fights to stay afloat, finding solace in music and her group of friends. But when a new crime rekindles the town’s fear, suspicions grow, rumors spread, and a relentless journalist, determined to uncover the truth, takes on the case.

What if the nightmare was never really over?