Darkroom geek Shen Zhou can hide the secret of color blindness with misplaced color cards, but he cannot hide the curse that emerged in the developer when he developed the negatives of a suicide in 1947. Lin Wusheng, his old rival in the debate, discovered that the three hours he disappeared every Wednesday were spent feeding color-eating glass negatives in a century-old darkroom. When the tips of her hair become the only color he can recognize, this redemption using developer as a weapon will eventually expose the campus blood contract sealed by silver salt - some memories must be broken and developed to prevent the world from fading into black and white.
Intention: love