Katsutaka and Kazuomi, high school seniors, harbor a secret obsession: watching a pair of younger boys, Yuki and Kaede, romantically involved. As Kaede and Yuki enter high school, the seniors become determined to capture them. However, upon meeting their objects of desire, Katsutaka and Kazuomi begin to question whether their perceptions match reality, leading to a complex exploration of their unrequited longings.