Y/n L/n was a young boy and was declared a Beast Tamer in his profession in the land of magic and mythical beasts. After being fired from the Hero's party, Y/n sets out on his own life as an Adventurer to look for a better life than what he was in his previous party. Along his journey's, he encounters a series of girls who are 'Ultimate Species' as they join him in his adventures across the land.