A lovers' break-up, a mysterious website called www.kellerteve.net, a disturbing phone call summoning the main characters to a midnight rendezvous in an abandoned zoo, and the theft of a motorbike leading to a dangerous chase in the subway are only the start of this unnerving story.

Olga, a girl around 25, comes to Madrid from the village she used to live in with her father, in order to have a new start in life. Her father suffers from a deep depression since her mother died, and she does all she can to help him. She works with advertising, and starts as an assistant, in an agency. In no time, she's doing her own creations. But the sexual harassment from an important client, her colleagues' envy and her own ambition lead her to jail.

While three brothers, heirs of a hotel owner, want to restore the glamour of yesteryear to the establishment, a Health Department official tries to find a way to close it down for good.