Lin Mo is a taciturn librarian who hides his cowardice in the scent of ink on old book pages; Chen Xi is a street graffiti artist who splashes bright paint on the walls of ruins. During a thunderstorm, the two accidentally collided while taking shelter from the rain in the old library. When they opened their eyes again, they were in each other's body.
Lin Mo was forced to stand in the noisy street with a paintbrush in hand. Only when the paint stained the back of his hand did he realize that Chen Xi's seemingly free life contained the grievances of his father's misunderstanding. Chen Xi sat in a silent library, and when his fingertips ran across the yellowed pages, he understood Lin Mo's longing for his mother in silence. Without the help of magic, they can only cope with life clumsily for each other: Lin Mo bravely helped Chen Xi complete the street painting exhibition, but discovered that he was sensitive to color when mixing colors; Chen Xi organized ancient books for Lin Mo, and found clues to untie his knot between the lines. When the two souls stumbled forward in the misplaced bodies, they gradually saw the neglected light in each other's lives - it turns out that introversion is not cowardice, publicity is not unrestrained, and understanding is the key to breaking the misalignment of fate.
