In the glitzy realm of stardom, Ryu Seon Jae shines as a top-tier celebrity, captivating the spotlight since his debut. Despite the facade of a perfect life, the demanding nature of the entertainment industry has left him utterly exhausted. Im Sol, an ardent irer, holds an affectionate love for Ryu Seon Jae. A childhood accident derailed her dreams, yet the solace found in Ryu Seon Jae's music on the radio transformed her into an unwavering fan. The narrative takes a poignant turn when Im Sol, reeling from the breaking news of Ryu Seon Jae's tragic demise, experiences a miraculous twist of fate. Transported back 15 years into the past, she confronts Ryu Seon Jae in his 19-year-old high school self. Im Sol grapples with the formidable challenge of altering the trajectory of his future, driven by an unyielding determination to avert the impending tragedy. Adapted from the web novel “The Best of Tomorrow” (내일의 으뜸) by Kim Bbang (김빵).