Three years of marriage. Three years of "polite" silence. When Jiang Cheng married Lan Xichen at fifteen, it was for family. When he divorced him at eighteen, it was for freedom. But a year later, Jiang Cheng finds himself sitting in a degree class, staring at the one man he never wanted to see again. His new English Professor. His ex-husband. Lan Xichen is perfect, elegant, and strictly professional. But behind closed doors, the "gentleman" mask slips. Between stolen kisses in the washroom and heated arguments in the store room, the secret they are keeping is about to explode. How long can they pretend they are strangers when the whole world is watching?