After working all night to catch up on the project, Lin Xiao, a social worker, opened his eyes and entered an ancient house fighting novel. He became Lin Xiao, a cannon fodder heroine with the same name and surname as himself, who ended up miserable. The original owner was the concubine of the Hou family. In order to climb Gaozhi, she deliberately mistakenly identified Prince Jing as the marriage partner. After being exposed in public, she became the laughing stock of the capital. She was eventually killed by the concubine and Prince Jing. Lin Xiao, who was well aware of the plot, made up his mind to avoid the trap, but the first thing he did when he opened his eyes was that he recognized the wrong person - he mistook the villain Regent Xiao Jue, who was 2.8 Meters tall and murderous without batting an eye, as Prince Jing and pounced on him, hugging his thighs and shouting "fiancé". Xiao Jue has lived for twenty-five years and has never been so offended by anyone. He wanted to raise his hand and crush this ignorant little girl to death, but he saw her round eyes open and an expression of "I admit it was wrong but I am not panic": "Since I admit it, let's just live with it." From then on, the style of the capital changed suddenly: the indifferent regent had a little whirring tail beside him. She was obviously the mistaken "fiancée", but it stirred up the villain's palace and tore apart the enemy's conspiracy. King Jing wanted to ask for an explanation, but Lin Xiao dismissed him as a "love rival"; his sister-in-law wanted to cause trouble, but Lin Xiao used modern tricks to get her around; Xiao Jue went from "bearing it for a while to see how long she keeps pretending" to "I can only bully my own people." A hilarious fate that began with a mistaken identity begins. Not to mention the cannon fodder's counterattack, he also abducts the villain boss back home.