Detention brings together five disparate high schoolers, but a killing — and secrets — keep them together as a cat-and-mouse murder mystery unfolds.

A spellbinding and romantic supernatural thriller. Ten years after an apocalyptic event left the world haunted by ghosts, Roni receives a threatening message from beyond the grave. Joining forces with a mysterious classmate, Kirk, Roni descends into a shadow world that blurs the bounds of the living and the dead-and begins a desperate race against time to stop a cunning killer.