The plot could revolve around a world where werewolf packs have a strict hierarchy. The main character is mated to the alpha and his beta, which is likely to stir up a lot of emotions and events. There could be jealousy among other pack members, or there could be external threats that force the three of them to work together. This relationship might also be a key to some sort of prophecy or special power within the pack, and the story could be about how they discover and use it.
Since I haven't read it, I can't say for sure. But based on the title, the main characters are likely to be the one who is mated (presumably a female), the alpha of the pack, and his beta.
Alpha beta fanfic is a form of fanfiction. Usually, it plays with the ideas of 'alpha' and 'beta' archetypes. These can be used in various ways. Sometimes it's about personality traits, like an alpha being more assertive and a beta being more laid - back. In fanfic, it allows for interesting character dynamics and plot developments. It could be set in different fictional settings, from fantasy worlds to science - fiction universes, and gives fans a chance to expand on the original concepts in creative ways.
Well, generally, it often involves a story where the female lead gets mated to the alpha king. There are usually elements of power struggles within the werewolf pack, as well as the development of the relationship between the two main characters. They might face challenges from other pack members who are jealous or oppose their union.
I'm not sure specifically as there could be many different versions of such a fanfic. But generally, it might involve an alpha character, who is usually a dominant figure in a werewolf or some supernatural setting, forming a mating bond with a rogue, which is often an outcast or a character not following the normal pack or group rules. It could be about their journey of dealing with this unexpected bond, facing opposition from the alpha's pack perhaps, and how they grow together in the relationship.
There are many novels in this genre. One popular one might be 'The Alpha King's Mate' which often features a strong female lead who is fated to be with the powerful alpha king. The story usually involves elements of romance, adventure, and the challenges of pack life.
As the title suggests, the two main characters are likely to be the alpha and the rogue. The alpha is probably a strong, dominant character within a group or community. The rogue is someone who is outside the normal structure, perhaps an outcast or a loner.