In the Lunar Chronicles book called Winter, Cinder is raising an army...
They march to the castle through the maglev tunnels under Luna's Surface.
The battle between Cinder (a cyborg and the rightful queen of Luna) and Levana (the dictator of Luna) has begun. Cinders army fights bravely, but Levana's army has powerful lunars, and lunars can control other people with their powers. They can even make Cinder's army kill each other.
Cinder rushes through the castle of Luna, heading toward the throne room to find Levana....
Levana is in there, with one of Cinder's friends, and every time Cinder took a step toward Levana or raised her gun, Levana would use her mind powers to make Thorne take a step toward the other side of the room, where there was a wide edge with a lake far down below. So Cinder and Levana battle with their mind powers, each one trying to get the upper hand.
Meanwhile, more of Cinder's friends enter the room and Levana controls them to try to kill Cinder, and forces them to try to stab eachother.
In the end, Cinder is stabbed by Levana, but at the same time Cinder shoots her, Levana dies and Cinder life is saved by her friends. (and boyfriend) She then becomes the rightful queen of Luna and there's finally peace.