Young warrior Li Xingyun and his friends Lu Linxuan, Zhang Zifan, and Ji Ruxue enter the martial world on a secret mission to find the legendary Longquan Sword. As they face enemies together, hidden motives and the reappearance of the mysterious master Bu Liangshuai threaten to expose them. With Longquan’s secrets coming to light, the four must navigate deadly challenges to fulfill their destinies.

In turbulent times, Li Xingyun’s secret royal heritage emerges, attracting rival factions eager for power. As friends Zhang Zifan and Ji Ruxue wrestle with loyalty and love, Li Xingyun reveals a hidden strategy, exposing surprising alliances and hidden identities. Together, the young heroes embark on a journey fueled by their vision of justice and honor.