Laura is a 25-year-old journalist who lives an isolated life in a small flat in Mexico City. The banality of her daily life stands in stark contrast to her nightly pursuit of sex and love. Finally, Laura meets the brooding, would-be actor Arturo. After the first time they make love, Arturo ignites feelings in Laura that leave her deeply troubled. They embark on an increasingly dangerous sadomasochistic relationship in which pleasure, pain and love merge. Their physical relationship seems headed for a very dark place as her secret past resurfaces, pushing Arturo to the limit.