The mortal prince Li Han's family was murdered seven years ago by seven immortals. The fabled Endless God Realm protected him and his sister Li Yao as they were about to die. Li Han came back after seven years. He must continuously advance his cultivation in accordance with the God Realm's standards in order to awaken his sister and keep the populace safe. In addition, he swore to get revenge and track down the year's murderer! However, the situation is trickier than he thought. As the truth gradually comes to light, Li Han is forced to choose between gratitude and retaliation.