After a modern corporate slave died suddenly from overwork, they transmigrated into a xianxia novel titled "Long Song of the Immortal Path", becoming the notorious vicious female supporting character inside. Although the original owner had top-tier spiritual roots, her disposition was twisted. Since childhood, she had envied the naturally talented junior sister Lin Qingyao and made trouble everywhere, ultimately having her cultivation crippled by her own master, Immortal Venerable Hanyuan, and being thrown into the endless abyss without leaving a corpse. After transmigrating, before Su Wanwan could digest reality, she was bound by the "Plot Task System". The system required her to strictly follow the original plot, pushing forward the romantic development between her master Immortal Venerable Hanyuan and Lin Qingyao until the two became Dao companions. From then on, the vicious female supporting character was forced to act as a matchmaker.