This highly charged sexual thriller from Mexico follows Laura (Monica del Carmen), a freelance journalist, as she alleviates the boredom of her solitary existence by moving from one anonymous sexual encounter to another. Upon meeting Arturo (Gustavo Sanchez Parra), she finds herself drawn into a sadomasochistic relationship in which he is the dominant partner. Increasingly, however, the balance of power shifts. What begins as an attempt by two lonely people to connect with one another soon becomes something more dangerous. When Laura marks a red square around an upcoming date on her calendar, the wheels are set in motion for a startling conclusion.