en Cuevana 3. Hyunsoo, a college student, has a trauma to her ex-girlfriend. One day he buys a female mannequin to paint. However, it wasn't a mannequin that Hyunsoo bought, but a cutting-edge sex robot. Hyun-soo's ex-girlfriend Min-ji feels jealous when she sees him after having a hot night with Lara. When she meets Minji again, Hyun-soo presents Lara the sex robot to her father, Cheonsu, and she experiences a new world from Lara.