【電影版】崔延雨由於大腦識別功能而無法區分顏色，只有高柳翰的臉龐會刺激崔延雨大腦的一部分，使他能夠看到顏色。 當崔延雨看著高柳翰的臉時，會有一種令人興奮的「Color Rush」⋯

Monochromatic people (known as 'Monos) live in a world where they are unable to see colour and therefore view their surroundings through varying shades of grey, black and white. However, every Mono has a fated person (known as a 'Probe') who is able to trigger their grey-scale world into colour, inducing what is termed a 'Colour Rush'. Yeon Woo is a Mono. He’s aware that other colours do exist but has never experienced them for himself, nor is he interested in doing so. However, Yeon Woo’s life is forever changed when he meets Yoo Han, his Probe, and experiences his first Colour Rush. Terrified that he'll be obsessed with Yoo Han because of Yoo Han's ability to make him see colour, Yeon Woo tries desperately to avoid Yoo Han—but why does Yoo Han insist on drawing close to him?

그의 눈엔 세상이 회색이다. '신경전색맹'인 모노 연우. 실종된 엄마에 대한 아픈 기억을 안고 새 학교로 전학을 간다. 그곳에서 만난 유한의 얼굴을 보자 갑자기 쏟아지는 세상의 모든 색깔. 모노의 운명적인 상대 프로브를 만난 것일까.

(색을 볼 수 없는 모노가 색을 볼 수 있게 만드는 프로브를 만나 서로에게 새로운 에너지를 주며 사랑을 키워나가는 과정을 그린 청춘 영화)