A modern-day overworked office worker transmigrates into Zhang Xuanchen, the disgraced young master of the Zhang family who has failed his martial soul awakening nine times in a row. He binds himself to a laid-back, luck-bringing system that lets him level up by doing nothing. Taking a beating, strolling, sleeping, and eating all grant experience points. By enduring humiliation and pretending to be weak while concealing his true strength, he relies on his lucky koi martial soul to absorb damage and evolve in desperate situations. He successively humiliates his former fiancée Liu Ruoyan, who broke off their engagement, and his romantic rival Chen Shaoqing; purges the second elder, a traitor within his family; joins forces with Commandery Princess Su Nianqing and Bai Ling'er of the Valley of Ten Thousand Poisons; massacres the Blood Saber Sect; and kills the mastermind, Imperial Preceptor Murong Xuan. He keeps breaking through to the Divine Transformation realm while taking it easy, ultimately reaching the pinnacle of martial cultivation and becoming the Martial King who protects the nation.