In this episode, Justine’s fantasies take us to Macchu Picchu, where Robson is looking to reveal the secret of the “Incas of Lost Gold”. Various agencies and international crooks are trying to get their hands on it. Robson is seduced by a Norwegian woman and tied up alone, then rescued by Justine who is then kidnapped as a sacrifice to the “Sun God”.

She is rescued by a daring “Inca Prince”, and returns to reality where her prince is Robson’s guest speaker, Professor Ray de Luz. Summer break begins, and Justine and Ursula are off to Italy to visit Justine’s father.

While at dinner they run into Professor Ray de Luz, Justine’s Inca Prince launching her into fantasy about the Lost Inca Treasure, the key to which is a necklace for the prince, but is lost after some titillating adventures out the windows into the canals.

Justine returns to reality to find Robson having sex with Madame Souvray, but tries to forgive and forget.

After seeing Robson and Madame Souvray kissing, Justine slips into fantasy where she is working undercover to find Robson involved in a drug cartel run by Ray de Luz, the Incan Prince/Professor, and she sends them to jail. Back In reality, she and Robson agree to be “just friends”.