Hunters are specialized in a wide variety of fields, ranging from treasure hunting to cooking. They have access to otherwise unavailable funds and information that allow them to pursue their dreams and interests. However, being a hunter is a special privilege, only attained by taking a deadly exam with an extremely low success rate.
Gon Freecss, a 12-year-old boy with the hope of finding his missing father, sets out on a quest to take the Hunter Exam. Along the way, he picks up three companions who also aim to take the dangerous test: the revenge-seeking Kurapika, aspiring doctor Leorio Paladiknight, and a mischievous child the same age as Gon, Killua Zoldyck. Hunter x Hunter is a classic shounen that follows the story of four aspiring hunters as they embark on a perilous adventure, fighting for their dreams while defying the odds.
More info: Myanimelist, Wikipedia