In the war-torn northern battlefield, female general Xie Hongying was betrayed by a traitor and trapped in the Snow Valley with her remaining troops. When he was about to die, the mysterious doctor Rong Xuehui came to the rescue like a snowstorm, but he hid a pair of hands that disturbed the court.
She broke through the situation with the red tassel gun and discovered that he was the mastermind behind the battle; he watched her burn out the plot with cold eyes, but was shaken by the burning heat. When the truth is revealed - he plans to kill the king to change the world, while she wants to keep the country intact.
In the end, under the lonely city on a snowy night, he traded his life's chess game for a chance of survival for her, but she cut off her retreat and tied the red tassel on his wrist: "If Xue comes back, we will either die together or die together."
