Terren Foe is sent to the planet Terra Verte to capture the notorious Children of the Myth slaver, Thrain, and to accomplish a devious task. He is ordered to do exactly what the Queen of Caelum tells him to do as she helps him find Thrain. However, on the planet Terra Verte, machinery won't work, and slavers on the world Sierra, made Terren half machine. As he follows the Queen through dangerous lands his mechanical left side becomes useless. He also discovers the Queen is looking for Thrain for her own reasons.