Kim Mu Bi, an aspiring film director and assistant director, quietly works to follow in her father's footsteps in the film industry. Ko Gyeom, a passionate film critic, aims to watch every movie ever made and becomes intrigued by Mu Bi after meeting her on set. Meanwhile, Hong Si Jun, a self-proclaimed genius but unknown songwriter, still grapples with his past, including his ex-girlfriend, screenwriter Son Ju A.