Xiao Jie's father was a top hunter, but he left him when he was very young. Many years later, he, who was intelligent and kind-hearted, decided to become a hunter and use this opportunity to find his father whom he had never met. In the process of obtaining a hunter's license, Xiao Jie met Killua, who came from a killer family, Kurapika, the only survivor of the Fire Eyes Clan, and Leorio, who wanted to become a doctor to help the poor. He also formed a relationship of both friend and foe with Hisoka, a mysterious magician who regarded the strong as prey. After many tests, Xiao Jie successfully obtained the hunter's license, but for Xiao Jie, the test has just begun.