The King

Global warming continued unabated with humans ignoring the science until forced to their senses when the species is on the brink of extinction. With their planet officially dead, and millions dying each day, the world's leaders finally decide to act. Their actions and the introduction of a highly complex and evolved AI computer called HESSIE turn their fortunes around.
In the new city of Light, Malcolm Borgstrom goes about his daily business. Turning up for work on time and leaving on time. He's a man who lacks drive, who does the bare minimum and has no interest in climbing any social ladders. Malcolm is introverted to the point where people he knows refuse to socialise with him, it's too painful for Malcolm and those he is trying to socialise with.
One day he realises his calling in life, a life on the land living sustainably and self-sufficiently. He has had enough of the city and seeks permission to move away to the south-east of South Australia.
During the time on his "block" he decides to remove a pepper tree, a noxious weed, and in doing so uncovers a metallic object, an object that will have far reaching ramifications not just for Malcolm, but for the whole planet. It's an object that does not belong on Earth, but once Malcolm touches it, there is no going back, it has its grip on him physically and mentally. He has released a horror, a beast that has no morals or ethics. It thrives on power and killing and will stop at nothing in its quest to achieve them.
To stop the king, the Imperium assembles a team that they send to Earth to kill the monster before he takes control of the planet. They know the demented alien will not stop at Earth, he will want to move on as he did millennia ago and continue his bloody rampage.
The team the Imperium gathers consists of Michael and Samantha, their pilot Delanie and human friends Jim and Janet who the three met the last time they were on Earth dealing with an alien bug infestation.
Can the five kill the king? If they do, what will the toll be, it may be too high.