Lin Qingyi, a modern girl with severe social anxiety, transmigrates one day into the body of an ancient princess of a fallen kingdom, a disposable character killed on the way to a political marriage. The good news is that she has bound herself to a romance System. As long as she wins the favor of the current emperor and completes the System's missions, she can stay alive. The bad news is that the emperor is infamous for his cold cruelty and countless killings.
The System's first mission is to make the emperor like her. Lin Qingyi looks at the unpredictable man before her and trembles. To survive, she has no choice but to steel herself and try.
Emperor Xiao Yan has endured palace intrigue since childhood. Dark and suspicious, he trusts no one. To him, the princess of a fallen kingdom sent to marry him is nothing more than a political tool, and he has never given her a second thought. But this timid little princess, who sometimes says astonishing things, manages to pique his interest.
Lin Qingyi nervously carries out her System missions: bringing the emperor pastries she made herself (though they look awful), staying up all night embroidering him a sachet (though the stitches are rough), and even singing modern pop songs to him (though she is spectacularly off-key).
Though Xiao Yan complains, deep down he gradually finds himself drawn to this clumsy little princess. He discovers that Lin Qingyi may seem fragile, but she is strong inside, with a cleverness and courage that belie her appearance. When he works late reviewing memorials, she secretly drapes a coat over his shoulders. When palace maids bully her, she bravely stands up for her dignity. And when he is in a foul mood, her terrible singing cheers him up.
Lin Qingyi originally only wanted to complete her missions and save her own life, but before she realizes it, she has fallen for Xiao Yan. She discovers that this seemingly cold and heartless man also has a gentle side and
