Twin sisters Julia and Sara (each played by Belén Rueda) both suffer from a degenerative eye disease that robs them of their sight; Sara lost her vision completely, and it’s only a matter of time before Julia’s sight follows. The film begins with th...

Failing eyesight runs in the family here as the blind "Sara" apparently takes her own life in the basement of her home, leaving sibling "Julia" (Belén Rueda) - herself with irreversible eye problems of her own - left to investigate just what happene...