Gu Han has devoted years to cultivating the Heartless Dao, eventually reaching the realm of immortals. He descends from the mountain to uncover the truth behind the massacre of the Gu family. Back then, his master had nine senior sisters who were as close as blood sisters. Today, each has become a leading figure in her respective field. With his extraordinary immortal arts, Gu Han joins forces with his senior sisters to overcome crises and investigate the truth. Along the way, he repeatedly foils the schemes of Jiangcheng's four great families, exposes the mastermind behind everything—the Huo family of the capital—and destroys their decade-long conspiracy. In the end, he rebuilds the Gu family through justice and strength. United as fellow disciples, the sisters and their junior brother stand together to protect their home.