After a car accident, Si-hyun is left with no memory of her past and lives with Ji-won whom she met at the hospital. Si-hyun has colored hearing, an illness that visualizes sounds into colors. The mixed array of colors she sees with music makes her dizzy. So she protects herself by wearing a set of giant headphones. One day, Ji-won’s brother Woo-hyuk hears Si-hyun humming a melody in her sleep. He writes it down and gives her the score, hoping it will help recall her past....more

After a car accident, Si-hyun is left with no memory of her past and lives with Ji-won whom she met at the hospital. Si-hyun has colored hearing, an illness that visualizes sounds into colors. The mixed array of colors she sees with music makes her dizzy. So she protects herself by wearing a set of giant headphones. One day, Ji-won’s brother Woo-hyuk hears Si-hyun humming a melody in her sleep. He writes it down and gives her the score, hoping it will help recall her past. Meanwhile, Jee-il, a washed-out songwriter chances upon this score and offers to find the melody Si-hyun continues to hear in her dreams. They embark on a healing journey as they collaborate to complete Si-hyun’s melody.less