Princess Zhaoning of Daliang married Beidi in the name of Yong'an and married Beidi, but she fell into purgatory on earth. The once world-famous appearance was ruined by poison, the fine clothes were reduced to tatters, and the proud bones were broken under the humiliation of the barbarians. But the royal dignity in her bones and blood keeps her from giving in - even if she is abandoned like worn shoes, she is still a lone phoenix who never surrenders in difficult circumstances.
The border guard general Xiao Xinglan was like a silent black iron sword, becoming her last shield by adhering to etiquette. Knowing that she had no choice but to shoulder the mission of two countries, she could only protect each other silently, burying her forbidden feelings deep in the snow in the north. When the iron hooves of the barbarians once again pressed the country, he was ordered to go on an expedition. When he said goodbye, his eyes met across the thousands of troops, which became the last trace of tenderness in the troubled times.
This is a chess game destined to be unsolvable: she is trapped in her identity as a married princess, struggling between revenge and self-destruction; he is trapped in loyalty and righteousness, turning his heartbeat into blood stains on the border flag.
When the web of fate was torn apart by Zhao Ning, this time she once again chose to play chess with her own body, hold on to the piece, and break the game...