The Angel Brigade, an elite unit of the Transbaal Empire military, are tasked with hunting down The Lost Technology—enigmatic artifacts from the past possessing unknown powers. Under the command of Colonel Volcott O' Huey, who is nearing retirement, the Angel Brigade journey to various planets aboard their custom-built Emblem Frame vessels in search of these relics. Unfortunately, they tend to botch things up, frequently finding themselves entangled in bizarre and troublesome predicaments.