Miranda, a sex addict, works for a radio station and is married to a cop. She signs up for therapy in order to deal with her sex addiction. Also in the group is Javier, a sex-phone junkie. The two misfits hit it off and a torid affair ensues. But things get a little complicated when Javier finds out that his phone sex trysts have been secretly taped and being distributed all over Madrid and that his ex-wife is living with his business partner. Elsewhere, while investigating a murder case, Felix discovers Miranda's affair with Javier.