Modern-day girl Su Li suddenly transmigrates into the body of a useless female cultivator, mocked by everyone in the immortal sect. However, she unexpectedly awakens a special ability: she can instantly see the flaws in other people's cultivation. Determined to reclaim her rightful place in the Ancient Domain Trial and prove herself to the sect, she deliberately plays the fool while concealing her true abilities, cleverly outmaneuvering her opponents at every turn. Lu Zhiheng, the sect's top genius and senior disciple, initially looks down on her. But through their repeated encounters, he gradually comes to admire her intelligence, decisiveness, and perseverance. During the trial, the two go from enemies to allies, fighting side by side as they uncover and foil Zhao Qing's shocking conspiracy to secretly steal the sect's supreme treasure and frame others for the crime. In the end, Su Li claims the title of trial champion through her own abilities.