Galactic Ranger Mechatronette

Far away across the cosmos in the distant future there is a planet inhabited by a highly advanced civilization. All the people on this planet were only robots and they have all been living peacefully until one day their planet was suddenly invaded by evil monsters from another world. These dangerous monsters were innumerable and as soon as they arrived they immediately began to wreak havoc across the entire planet by destroying buildings from the outside and terrorizing the people within their homes. Fortunately a robotic heroine by the name of Mechatronette who has been very beloved by literally everyone on this planet was given the task by the planet's military forces which are known as the Galactic Rangers to hunt down these monsters and take them all down for the sake of everyone and the planet. During the battle she catches sight of an unknown spaceship orbiting around her home planet which was where all the monsters were coming from. So then she decides to follow it and while she was doing that she had thought of a plan to get into the spaceship itself and find the only mastermind behind the invasion and defeat them once and for all so the invasion can be finally over. Will she be able to succeed on her special mission and save all of her people and who or what could be the one that is responsible for spreading this invasion on her home planet?