Joohong is a well-known BL fan artist, but she is taken aback when her fitness instructor, Neung-geum, shows up in full cosplay at her booth during a fan convention. After witnessing his impressive muscles in action, she feels compelled to enlist him as a model for her upcoming spicy project. Even though they are both novices in this area, their modeling session at a hotel unexpectedly develops into a heated acquaintances-with-benefits arrangement. Their interests and physiques seem to complement each other perfectly, but will their nerdy yet fervent encounters evolve into something deeper?