
The idea of "BE MY GUEST" revolves around the anecdote of a villain named Kai, a voluptuous billionaire who commands power everywhere he goes. He's a dark, tall, and handsome man and his goal sets around owning everything he wants in a devious manner. Kai believes he can own the world and everything in it, with every means he gets and every chance he has, he uses his money to buy everything in his life.
Kai gets his woman, if not with money, by manipulating his way into her life in every possible way, Kai is willing to kill to get whatever he wants.
His past holds a chapter of him committing a murder crime, he r***d and killed five women while he was in university just to command respect and power. How did Kai get away with this? His stepfather was the Mayor at that time and got another person framed for his crimes. Kai gets rid of the peculiarity of killing but is still pernicious in having a woman. Kai goes for the plain and innocent ones and the women he could crush easily to feel better about himself. He gets pleasure by ruining both the rich and the poor's life. Kai is an enigmatic devil who deceptively walked into Nadia Williams's life.
The novel is set in New Brand City, FSA, a place of opportunity, and starts up with Nadia's POV, which shows her discomfort with Tony, her boyfriend, proposing to her, she believes Tony isn't the man she'd want to spend the rest of her life with but out of pity she inclined to the engagement.
Nadia meets Kai but finds his approach unpleasant, still got her captivated by him even if she had denied it to herself, Nadia loses her Job at the expense of Kai buying the building she used to work in, which was an amateur company that would have to start up from scratch again.
Kai offers her another high-paying job that she couldn't resist and so she accepts, which costs her her sanity. Kai entices her with his charms just to get under her skirt and after he can, he dumps her, treating her like garbage.
Nadia tries to get revenge, sworn to ruining his life, which everyone knows wasn't possible. She soon finds out that Tony and Kai are stepbrothers and that Kai had placed Tony in her life, he had gotten her boss to give her the job she once had and also made her neighbor who used to be her best friend, her watchdog. Kai had been in her life from the beginning.
She came to know that her foster father who had died in prison was the one who was framed for the crimes Kai had committed in the past.
Nadia thought if she couldn't ruin him, she'd make him fall in love with her and shatter his heart. Nadia remained in his company and tried her very best to get him in her palm, which she was able to achieve with difficulty.
Kai falls in love with her and then shows his true self to her, narrating that growing up his mother was abusive, she had abused him physically and mentally and was soon diagnosed mentally ill after she married his stepfather, Kai went into the hood and lived a very bad life before his stepfather came into the picture and tried to help him out. Kai has always hated women and only believes that they are all meant to be punished. Kai confesses to Nadia that he had killed women too. After all of this, Nadia leaves him.
He tries to get her back and then confesses his crimes to the cops, just to please Nadia and seek her forgiveness. Kai was meant to spend ten years in prison and when he got out, his empire had fallen and all he had left was the company in his father's name.
He goes after Nadia again, finding out she had given birth to a son for him and was now courting another man, Kai tried to fight for his love and because Nadia was still in love with him, she succumbed again and they got married. Reconciling with past relationships and ending rifts.

