Sound Candy: Fill me with your sound

Chae Rin returns to Jeju Island, her hometown, to take a break from the city and hyperacusis. While she helps her grandmother run a pension, Ncode, the group of idol trainees, comes to the pension to do camp training. As Seung Yeon, the leader of Ncode, has quite an attitude, Chae Rin doesn't like him so much, but soon they get closer. Chae Rin coincidently runs into Kang Hae Sung, the top idol star, and she even gets to experience the life of a successful fan as Hae Sung stays in her pension. Hae Sung is a narcissist but is slowly drawn to Chae Rin and her innocent way of treating him. However, Chae Rin's childhood friend, Hyun Jun, is by her side. The three guys' hearts start to flutter toward Chae Rin while they get involved with the strange Sound Candy. What role will Sound Candy play among the youth gathered in Jeju, and who will ultimately win Chae Rin's love?