Substituting The Ruthless Alpha's Bride

"you have to do it for us, Lia! If the Alpha finds out we let her escape, he will kill us all." Amelia had to keep her father's last words to her before she was transported to the palace ringing in her head, she had to remember why she was doing this. The witch had promised her the potion she mixed up for her would work and the Alpha would have no doubt that she is his mate, but that did not stop her from feeling anxious. The consequences would be huge for her and her family if it is revealed that they were trying to deceive the alpha. When Amelia's sister, Aria, who is the mate of the Alpha king of the most powerful Wolf kingdom flees days before she is to be delivered to him, Amelia has no other choice but to bear the burden of assuming her identity and filling in for her to protect her family. She will be forced to marry a man with a heart of stone, who had already made it clear that he would reject her sister because she is from a poor, low ranking family and only agreed to take her as his bride because he would be otherwise cursed.