Li Lianshan, a muscular modern-day man, accidentally transmigrates after being hit by a truck while saving a stray black cat. He awakens in the body of a young man who disguised himself as a woman to infiltrate the all-female Lianhua Palace. After awakening a passive cuteness ability, he uncontrollably acts coquettishly and pretends to be weak whenever he senses hostility, just to stay alive. Initially determined to escape, he repeatedly encounters the cold-faced, powerful senior sister Xin Yi and the sweet, innocent junior sister Su Miyao. Drawn into conflicts with the demonic cult, he alternately defuses crises with his cuteness and fights powerful enemies with his natural strength. He unexpectedly discovers that he is the Palace Master's biological son. In the end, he breaks the sect's old rules and stays in this world of martial arts, bound by the deep connections he has formed.