MS-133 was an Imperial science team commissioned by Moff Kentor Sarne, warlord of the Outer Rim Territories' Kathol sector. The team was led by Doctor Lancer Brunou, a respected archaeologist, and was comprised of scientists, technicians, and soldiers. In 8 ABY, they were assigned to explore a series of extensive ruins on the planet Aaris III that had hosted a civilization thousands of years prior. After several months, the team uncovered a chamber known as the Place of Kastays, and discovered an artifact, the Plaque of Victory. The Plaque, a sentient inanimate lifeform, had been responsible for the civil war that had led to the downfall of Aaris society by inducing feelings of paranoia and homicidal tendencies in those around it.