Juyeon works as a delivery driver at the family-run rice cake shop, living a reclusive life within its walls. The only space where she can spend time alone is her small delivery car. From her usual parking spot in a secluded corner of the car wash, she can only see Woojun, who works the night shift. One night, Sojin, who looks exactly like Juyeon, attempts suicide between the two of them. Woojun intervenes and prevents Sojin's suicide. The next day, Juyeon, who witnessed this, begins searching for the whereabouts of the two.