Seven years ago, the mortal prince Li Han and his family were murdered by seven immortals. On the verge of death, he and his sister Li Yao were rescued by the legendary Endless Divine Realm. Seven years later, Li Han returns. To awaken his sister, he must continuously improve his cultivation as required by the Divine Realm to protect all living beings. At the same time, he vows to find the murderers and avenge them! But things are far more complicated than he imagined. As the truth is gradually revealed, Li Han must choose between revenge and gratitude…