Radio talk show worker Miranda uses daily dog walking as an excuse to cruise for extra-marital encounters. And successful scriptwriter Javier is a phone sex junkie. When the two meet at a sex addiction clinic to undergo therapy, they embark on a steamy affair with psychological, suspenseful and shocking ramifications. Meanwhile, Miranda's husband Felix is investigating a murder case that inexplicably becomes linked to his wife's affair. An erotic study in compulsive obsession.