Se-eun is a janitor who is always the first to arrive at the pool where she works. One day, she runs into an old friend who is now a swimming instructor.
Middle schooler Hyeju, who had been making BL merchandise on social media, was swindled out of ten million won by her business partner. In an attempt to recover the money, Hyeju plans to deceive her parents by pretending to kidnap her younger brother, whom she’s always found annoying.
Soohyun, a solitary professional boxer, is preparing for a match when she spars with Minkyung, an amateur who boxes as a hobby, and takes a solid hook from her. After the hit, Soohyun begins to feel drawn to Minkyung, who suddenly enters her life, causing her match preparation to falter.
