Saitou spent his life as an underappreciated handyman before an unfair firing and a speeding truck landed him in a fantasy world, where a struggling adventuring party takes him in. Raelza is a prickly but powerful warrior, Morlock a wizard who can't always remember his own spells, and Lafanpan a fairy as greedy as she is cute; Saitou starts picking locks, hauling gear, and catching what they all forget, making himself indispensable for the first time in his life.