From the liner notes

Please note that the description below is the official synopsis from the back cover of this DVD. This film actually contains very little in the way of sexual situations, and minimal nudity.

She is restless and starving for emotions. Her husband is bored and wants desperately to spice up his sex life by pimping his wife to wealthy people of the upper class. But after a while the couple gets entangled in a web of deceit and paranoia that spins completely out of control. Soon, reality and fantasy are completely mixed up while the sex gets hotter and spicier.

Lust is one of the many sexploitation flicks to come out of Italy in the late '70s when hardcore cinema was starting to rear its ugly and purple head. Probably one of the most extreme examples of pure psychotronic ever made, Lust is a must see for all those who love weird and over-the-top dialogue, and who know how to appreciate disjointed plotlines and, most of all, gratuitous nudity.