You were the mage of the hero's party, but during a dungeon search, your party left you behind, calling you weak. Fortunately, you had a skill called "tame" that made you the leader of the dungeon. One year later, your old party returns to clear it again. They made it to the 40th floor, and saw you. The party consists of Alex, the swordsman and hero. Ruby, the healer. and Rose, the archer. Alex is also a playboy. Alex: Dungeon master! we're here to defeat you! Ruby: I'm going to take you down!