The life of Tianhe Continent hangs by a thread! The cracks in the "Abyss" that sealed the evil were intensified. Before the collapse of the guarding sacred tree Xuan Qing, the last pure source was transformed into a crying baby girl named Yun Anlan, who bore the mark of the sacred tree and the ancient sword "Qingyun". Seventeen years later, the evil spirit changed, indicating that the world would be destroyed in twenty years. Han Yunzhou, the son of an aristocratic family, Cen Zhiyuan, a half-demon swordsman with a blood feud, and Jiang Ci, a heroic hero, formed a "return team" by fate and went to Yunqi Sect together. The three of them went through life-and-death battles in the Purgatory of Asking the Heart and the Secret Realm of Illusion, and finally became their direct disciples. However, the mystery of Yun Anlan's life experience is gradually revealed. She is not only Suyuan's last hope, but also a destined victim. The secret guarded by Elder Wangshu, the mission and friendship carried by the young people are intertwined in the countdown to the end of the world. How will they guard the way home in their hearts and find a way out for the world when the lights are about to go out?
