Ye Bai, a patron of Qing Leng Gallery, and Lu Xiao, an uninhibited photographer, met because of a famous painting that hid a mystery. In the artistic puzzle of intertwined truth and falsehood, the two went from trial and error to tacit understanding, and jointly uncovered secrets that had been hidden for many years. They also created a heart-pounding love song between the two male protagonists in the interplay of light and shadow.