THE NIGHTMARE BEGINS

In 1999, Sanatorio Santa Rosa—a remote psychiatric hospital in Argentina—was sealed by federal order after unexplained deaths. Its records vanished. Decades later, Lucía Ríos, a digital archivist, uncovers a corrupted directory labeled "LÁZARO" while digitizing medical files.

When she opens it, she triggers a chain of horrors: nightmarish visions of the asylum, impossible phone calls breathing static and agony, and a series of deaths mirroring Santa Rosa's darkest moments.