A supernatural horror-comedy set inside an Indonesian prison, where an invisible force starts slaughtering inmates and forces rival gangs and corrupt guards into uneasy alliance. Director Joko Anwar uses the prison setting as a pressure cooker for critiquing systemic corruption, framing institutional rot as the real monster. The narrative leans Progressive because its sympathies run with the vulnerable and its villains are those who abuse power. A tenderly portrayed queer inmate character adds to that framing. The horror is laced with dark comedy, which softens the gore without defusing the critique. A family subplot gives the film some grounding warmth, but the dominant energy is satirical and socially pointed.