Koukaku no Pandora

Synopsis

Nene and Clarion are tasked with stopping BUER, a giant boring robot belonging to Uzal's company that went berserk after her underlings tried to use it against her. After the underlings trick BUER into firing its laser cannon, Clarion aims to reach its main console while Nene acts as her bodyguard. However, a large piece of rubble interrupts Clarion before she complete her mission, so she instead operates some smaller robots to allow Nene to reach the console and shut BUER down. With forces approaching on the laboratory, Uzal detaches BUER's Central Nervous Unit before having Nene and the others escape from the lab as it self-destructs, leaving Clarion in Nene's care. Upon reaching the surface, Nene and the others find themselves surrounded by Cenancle's Defense Force.

(Source: Wikipedia)