Four years ago, on the eve of Shan Yao's engagement, his girlfriend Wu Qi, who had been dating for three years, disappeared overnight;
Four years later, Wu Qi came back with a four-year-old child.
Wu Qin is ruthless.
The whole world thought that this kid named Wu Qin was Shan Yao's illegitimate son who was living abroad.
But only the person involved knows in his heart what exactly happened that night four years ago.