Transmigration: The Alpha King's Mate Is A Man

Scott McCall is a 45 years old famous doctor on his way to work one morning and got into a car accident and dies, his soul transmigrates into Liam's body. Liam was to be the new beta of Crescent pack after his father retired.  
Because their Alpha wanted to alliance with Alpha King and his younger brother wanted to replace Liam to become a beta, Alpha and his father knew that Alpha king did not find his mate, and because of his violence, werewolves rejected to be his luna. Then Crescent pack's Alpha and Liam's father decided to give a werewolf to Alpha king as a bargaining chip, Liam was the one they chose. They perform surgery on Liam, making him look slender and seductive.

However,  Alpha king smelled a good scent when he met Liam, and they found out they were mated to each other, Will Liam blow to fate or fight for himself, choosing his way?