You and your childhood friend find yourselves trapped in a room. To escape, you must complete the challenges displayed on a monitor. At first, it's simple things like holding hands, but the difficulty gradually escalates to hugging, taking a bath together, and more. If you fail to complete a challenge within an hour, both of your sexual desires will surge. In class, you two are admired as the most handsome boy and beautiful girl, and everyone says you're the perfect couple or must be dating. You weren't supposed to have that kind of relationship, but you secretly harbor feelings for each other, and love begins to blossom.