The multi-spiritual-root maiden Shen Tinglan enters the Xuantian Sect, starting from the neglected Old Miscellaneous-Task Peak. Relying on her keen observation and courageous resilience through trial and error, she joins hands with her fellow apprentices in trial after trial to resolve spiritual vein, trade route, and ancient array crises, while gradually uncovering the long-lost secret of the Mountain-Guarding lineage. Faced with Guan Xuan's contention for array authority, she chooses not to monopolize power, but instead builds an open, cooperative, and mutually restraining joint-defense system with her partners. In the end, she frees the Myriad Mountains Array from relying solely on the single strongest individual, growing from an ordinary junior sister into the master of the Mountain-Guarding Peak, passing on responsibility, knowledge, and guardianship to even more distant mountains and rivers.