Mara (Asmara Abigail), who works as a Lady Companion (LC) at a karaoke lounge, accidentally kills a client while protecting her best friend, Dini (Sara Zany), from an attempted rape. Desperate to escape the consequences, Mara is forced to contact Thomas (Dwi Sasono), a mysterious karaoke customer, and accept his marriage proposal. During his visits to the karaoke lounge, Thomas never physically approaches Mara and only asks her to marry him. Mara eventually moves into Thomas's house, where he lives with his mother, a strangely dressed, frightening woman who suffers from a mental disorder. From her very first day in the house, Mara begins experiencing disturbing incidents and terrifying nightmares.

Cornelio Sunny is an Indonesian actor, producer, screenwriter, and director of Mexican and Palembang descent. He previously directed Death Knot (2023) and served as co-director and screenwriter of Kromoleo (2024). Featuring violence and coarse language, Sumpah Darah has been classified by the Indonesian Film Censorship Institution (LSF) for audiences aged 17 and above. Be discerning in selecting content suitable for your age. (rna)