Night Of The Seagulls
La noche de las gaviotas (original)
A bizarre cult that practices a ritual of sacrificing humans terrorizes a young doctor and his wife, who have just moved to the group's village.
Starring Víctor Petit, María Kosty, Sandra Mozarowsky, Julia Saly, José Antonio Calvo, Javier de Rivera, María Vidal, Fernando Villena, Oscar Phens, Susana Estrada
It's a horror and thriller movie, and has a rating of 5.7 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Indonesia.