Diary of a Sex Addict recounts the growth of Val, a beautiful and educated woman who is eager to experience new sensations through sexual encounters. A woman who uses sex as a tool for introspection and to attain what every human being longs for: love, affection, recognition, personal fulfilment... She goes to bed with whomever she wants, whenever she wants to. She lives her life to the limit. This brings her a whole host of problems with men, with her work and with her friends. All of this, along with the death of her grandmother, leads to a turning point in her life. Val knows that she must change.