Our purpose is to overcome the distance between beast and overman: a dangerous crossing that transcends the mediocrity and conformity in which the masses dwell.
According to Nietzsche, to prevent nihilism, one should break free from the herd and forge a path of continual becoming and self-overcoming, the authentic path of the overman.
In Nietzsche's book 'Also sprach Zarathustra', the idea of the overman unfolds through the story about a sage named Zarathustra who spreads his wisdom among the people open to it.