Bianca (1982)

A rich man lives with his wife, Stella, in a wonderful villa in a Greek island. He loves to collect all the beautiful women he can pay for, and enjoy sex with them together with Stella whenever they want. Bianca is one of the 'guests', she lives in the villa just because Orestes pays for her sister medical cures. One day during Orestes' party Stella meets an author that convinces her to leave the villa. When she leaves Orestes immediately studies a plan to have his top girl back