Kimi Wilson went to Earth as part of a mission to see whether the planet had recovered enough for humans to return. But when she's kidnapped by the Mongarians who settled Earth in the humans' absence, she's terrified. Their leader wants to have her at all costs. But one Mongarian, a doctor, rescues her and reveals the true reason for her kidnapping. The Mongarians have recently started getting sick from the plants of Earth they've been eating. They need Kimi, a botanist, to help them figure out the best plants for them to eat and help them survive on Earth.
Kimi agrees to help the Mongarians. She learns to appreciate this alien race and their cave home. Most of all, she learns to appreciate the attentions of the doctor, Khan-Min, she's been working so closely with. After several highly pleasurable erotic encounters, Kimi is confused by her feelings for Khan-Min and wonders if she should go back to her home or stay on Earth with her alien lover.