In a small Spanish village, the peaceful life of the townspeople is disrupted by a mysterious series of events following the discovery of an ancient cross during routine church renovations. Local archaeologist Miguel is summoned to investigate the origin of the relic. As he delves deeper, he uncovers that the cross is linked to a dark chapter in the village's history involving a pact with demonic forces. Carmen, a devout villager, becomes increasingly uneasy as strange occurrences begin to affect her family, and ominous symbols appear throughout the town. She teams up with Miguel to unravel the truth behind these unsettling incidents. As they probe further, they face resistance from the local priest, Father Antonio, who harbors secrets about the church's past and the true nature of the artifact.

The atmosphere in the village grows tense as unexplained phenomena escalate, leaving the villagers in fear. Tensions rise, pitting neighbors against each other as blame and suspicion spread. Miguel and Carmen's investigation leads them to hidden writings that reveal chilling details about the cross's origins and its potential threat. Despite mounting danger, the duo is determined to uncover what is bringing malevolent chaos to their town. However, as they edge closer to the heart of the mystery, they must confront both an ancient evil and the deeply rooted superstitions that bind their community. What they eventually uncover challenges their perception of reality and forces them to question whether their fate is already sealed by the past.