Si-hyun who lost all memory after a car accident and has colored hearing in which she can see sounds in colors, tries to complete the melody in her dreams. As the song nears completion, Si-hyun's fragmented memories return to her.
Where to watch
Not streaming anywhere
Not on any streaming service in United States, and not available to rent.
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Cast
12 people
Sandara Park
Shi-hyun
Known for
Cheese in the Trap
Han Jae-suk
Ji-il
Known for
All About Eve
Hyun-gon Ha
Woo-hyeok's Band Drum
Jai-hong Juhn
Cho Dong-in
Woo-hyeok
Known for
Hellbound
Pyramid Game
Hong Ah-reum
Ji-won
Also in
God of War
Legendary Witches
Ah-reum Hong
Ji-won
Jo Dal-hwan
Jong-hwan
Known for
All of Us Are Dead
Tale of the Nine Tailed 1938
Dal-hwan Jo
Jeong-hwan
Ha Hyun-gon
Woo-hyeok's Band Drum
No other roles listed
Kang Ye-seo
Young Shi-hyun
Known for
Abyss
Miracle in Cell No. 7
Bae Yong-geun
Record Label Representative
Known for
The Wailing
Rough Cut
Juhn Jai-hong Director · Jo Seong-geol Writer Lee Si-hoon Production designer
First release April 6, 2017 · Produced in South Korea · Original title 원스텝
Production
South Korea
Produced in
Languages
Original title
원스텝
Original language
Korean
Spoken on screen
Korean
Release dates
Spain · April 6, 2017
Theatrical
South Korea · April 6, 2017
Theatrical
No release date listed for United States.
Japan
October 29, 2017 · Digital
Philippines
May 10, 2017
Taiwan
May 26, 2017
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Some details come from TheTVDB.