Following a tragic accident, Taro Umeboshi was whisked away into another world. A isekai.

However instead of the fame, fortune, and power of classic a RPG hero, young Taro was summoned by none other than a dungeon lord.

From here he must fulfill the whims of his new tyrannical master and help defend the dungeon from other would be adventurers! Formations, traps, and battle strategies must be utilized, due to the influx of *Heroes from another world*. The dungeon lord seeks to rebalance the scales!