In 2041, humans live side-by-side with robots and androids. A well-known cybernetic engineer, Alex Garel, returns to his hometown to create a new model of robot child.

In 1901, Elisa Sanchez Loriga took on the identity of Mario Sánchez to marry her lover of fifteen years, Marcela Gracia Ibeas.  

A young schizophrenic who felt threatened by a presence he was unable to define turns up gruesomely dead in his bathtub