Ep 1. Episode 1

Park Soo-young, a talented high school student and lead vocalist of the popular band "Crude Play," is revealed to be a fraud. Unable to write music or lyrics, he relies on the help of his fellow band members and the talent of a mysterious songwriter who goes by the name "K." When he meets a girl named Yoon So-rim at a concert, he is struck by her voice and is inspired to pursue his dreams of creating music from the heart.

But So-rim also has dreams of becoming a singer, and she quickly becomes enamored with Soo-young. Despite his best efforts to keep his true identity a secret, So-rim discovers the truth and vows to still support him. As the two grow closer, they face challenges from the music industry and their own personal struggles.

Meanwhile, Soo-young's bandmates struggle with their own guilt over their involvement in his deception. Guitarist Yoo Shi-hyun, who has feelings for So-rim, becomes increasingly jealous of Soo-young's growing closeness with her. Bassist Lee Kyu-sun faces pressure from his parents to give up music and focus on academics. Drummer Kang Han-gyeol is haunted by his past mistakes and fears they will destroy the band's future.

As the season progresses, Soo-young and So-rim navigate their blooming romance and pursue their dreams together, while the Crude Play members confront their demons and strive to make amends for their role in Soo-young's lie. The Liar and His Lover explores the power of music, the obstacles faced by young artists, and the importance of being true to oneself.