Unknown Season - The Angel Brigade, an elite branch of the Transbaal Empire military, are assigned to search for The Lost Technology, mysterious items from the past that hold unknown powers. Led by the soon to retire Colonel Volcott O' Huey, the Angel Brigade travel to different planets using their specially designed Emblem Frame ships to search for Lost Technology. Unfortunately, they usually mess up somehow and end up getting into all kinds of weird and troublesome situations. (myanimelist.net)