It's Eva's weekend out with her friends, and her boyfriend Sergio complains she won't take him with her. He decides to go out on his own without knowing what terror he will eventually have to go through.
Samuel is ten years old and is madly in love with Lucía, who is twelve years old and has a master plan to get rid of the only obstacle left in her life to get what she wants: to be a writer, film critic, and rich.
