The disasters of heaven and earth, countless space gates appeared out of thin air. Various alien beasts surged out of thin air, and humans ushered in a critical moment of life and death. In order to seek a glimmer of vitality, powerful military soldiers and scientific researchers risked their lives to enter the world behind the space gate and were shocked to find that hunting alien beasts here has a certain chance of obtaining alien beast cards. Those who are stronger than ordinary people can control alien beast cards, either transform into combat bodies during their lifetime, or transform into weapons and armor, or... A new profession came into being and is respected as