Ha-seong starts having erotic dreams about her childhood best friend, Tae-han—someone she never considered as a romantic partner. Confused, she honestly tells him about the dream, but his strange reaction only complicates things further. As her feelings grow tangled, a freshman named Ga-eul boldly pursues Ha-seong, even clashing with Tae-han. What begins as an awkward confession slowly turns into a messy love triangle between childhood friends and new emotions.