Legend has it that in the abandoned medieval town of Berzano, perched on the border between Spain and Portugal, a mythic version of the Knights Templar haunts the night. According to the legend, these once-powerful warriors rise from their tombs and return as revenants, their eyes pecked out by birds and their bodies rotted from the gallows. The film threads a chilly atmosphere through this rumor, painting each whispered tale with a sense of looming danger and ancient mystery. The undead are described as blind, moving with a patient menace as they stalk the landscape and the living.
On a vacation in the region, Virginia White reconnects with her former college friend Betty Turner Lone Fleming, who has settled nearby and now runs a mannequin factory. Virginia also crosses paths with her former lover, Roger Whelan César Burner, who eagerly latches onto the dynamic between Virginia and Betty. Roger’s interest in Betty stirs a tangle of jealousy in Virginia, who had once shared a romantic past with Betty. The tension comes to a head on a train journey arranged by Roger, a trip that is meant to be carefree but becomes a flashpoint for old wounds. In a swift moment of anger, Virginia leaps from the moving train, and the two women are left to contend with the fallout and the legend they’ve begun to chase.
Wandering the countryside, Virginia stumbles upon Berzano’s ruins and decides to camp there for the night. By dawn, the town’s grim legend takes on a brutal reality: the Knights rise from their tombs and descend on her, biting and ripping at her flesh. The morning after, Virginia’s body is discovered by the train conductor, setting in motion a mystery that threads through the locals’ whispers and fear. In the morgue, near Betty’s laboratory, Virginia’s corpse somehow returns to life in a shocking display of the legendary revenants, killing a custodian before fleeing back into the shadows. Betty’s assistant manages to trap the revenant by turning the mannequin factory into a deadly blaze.
The pair’s investigation brings them to Professor Pedro Candal, a librarian who hints at a larger truth and indirectly sends them to seek out his son Pedro, a small-time smuggler living near Berzano Francisco Sanz, Jos Thelman portraying Pedro Candal. The police are unsettled by the possibility that a family drama might lie behind Virginia’s death, and they suspect Pedro of orchestrating fear to destabilize the locals. Betty and Roger recruit Pedro, and Pedro’s lover Maria Maria Silva joins them as they return to Berzano to press the mystery into the daylight. The plan is to prove that the knights are real, and that the town’s haunting is rooted in something more than superstition.
When they arrive, the knights strike with ruthless efficiency. Roger, Pedro, and Maria are slain in the ensuing carnage, and the revenants close in on Betty, their presence detected by her heartbeat and driving her to flee. She boards a passing train, slipping into a cargo of coal and escaping the clutches of Berzano. The knights seize the train, killing the conductor and turning the passengers into a grisly spectacle as they cannibalize those aboard. By the time the train reaches the station, Betty is pale with shock but alive, and a station attendant helps her off as the crowd behind her screams at the horrific sight hidden within the car and under the coal. The legend of Berzano lingers, now reinforced by a violent, unforgettable confrontation that binds the living and the dead in a shared, chilling memory.