To My Star tells the story of actor Son Moo-hyun, who will play actor Kang Seo-joon in the play. With perfect looks and talent, he has never shown a downward trend since his debut. He shines like a star in the sky, but because of something, he enters the world of chef Han Ji-woo and experiences subtle emotional changes. Actor Kim Kang-min will play the warm-hearted chef Han Ji-woo, who has been moving silently towards his goal with unyielding tenacity. Because of Kang Seo-joon's intrusion, he falls into a lifetime of chaos. As light years go by, they encourage each other and love each other.