
S01E01 Episode 1
Yeon Woo suffers from monochromacy. In his eyes, everything is in the shades of gray colors. On the first day at Sangsang High School, Yeon Woo gets to meet new classmates. One of them is...
Yeon Woo thinks Yoo Han is avoiding him as he warned him about the danger of mono. However, when Yeon Woo tries to accept reality, Yoo Han invites him to attend an art exhibition together. Yeon Woo opens up to Yoo Han more and talks about his missing mother to him.
Yeon-woo, neurologically colorblind, sees colors through Yoo-han in a "color rush." Their connection intertwines with the mystery of his missing mother.