Slicked in lotion and driven by rivalry, two sisters compete to see who can seduce their stepfather first.

This domestic drama focuses on two slender sisters, Yu Shinoda and Yuria Hafu, who engage in a provocative competition for their stepfather's attention. Using "Nuru-Teka" (slick and shiny) lotion to enhance their physical appeal, the sisters use their bodies to tempt and seduce him in a series of escalating encounters. The film emphasizes the sibling rivalry and the "battle for love" (Ubaiai) as each sister tries to outperform the other in a slick, lotion-filled seduction.