The Head Alpha's Widow Beta

Alexander turned 20 and on his 20th birthday, he found that his now father's beta is his mate. He was beyond happy because he always had a tiny little crush on the beta and hoped that the beta was his mate, he didn't mind the age gap.

Michael is 30 years old and have been the beta of the head alpha of the black moon pack since he was 18, he was going to continue to be the beta for the head alpha's son but the tables turned when the head alpha's son was his fated mate.

What will happen when Alexander comes to know that his mate was mated to someone before, but now is a widow.