Yun Kai was born with a physically leaking body, and was asserted not to live past sixteen. She accidentally tested positive for a rare mutated lightning spiritual root, yet because her Dantian was like a funnel, the spiritual root was as good as useless. She became Qin Tian's nominal disciple, and while boarding the sect's flying boat encountered an attack, with a foreign object falling into her Dantian. The foreign object, a walnut, can absorb spiritual qi and in turn nourish and nurture her, helping her slowly repair her body. Yun Kai struggles to survive in the Nanhua Sect, making friends with Jiang Kewei, studying hard in the scripture pavilion while cultivating, relying on her wisdom to defuse several crises, and successfully breaking through the Qi Condensation stage. She unexpectedly discovers that someone is coveting her lightning spiritual root, secretly plotting step by step, seeking self-preservation, and contending for destiny against heaven and people in the perilous world of cultivation.