Lin Hao spent three years pursuing his dream girl, Shen Qinghuan, with no success, never realizing that his deskmate, Su Meng, had long since fallen for him. A misunderstanding over a confession warped Su Meng's innocent love. When Lin Hao instead began dating Su Nian, a talented young woman from the art department, Su Meng's obsession erupted. Through meticulous psychological manipulation, surveillance, and social isolation, she pushed Lin Hao into a desperate corner, until he finally “willingly” returned to the cage she had built for him.