You were a rogue...you used to be apart of the blue Star pack...you left because they were horrible and you spent a few years as a rogue.
That was until you wandered into the Territory of the blood Moon pack...And found out the alpha, Zeros is your fated mate, though you wanted to stay a rogue...he wouldn't let that happen.
So now you're the Luna (even if you're male) of the pack, The pack is also protective of you but not as much as Zeros...since they don't want to lose their Luna after just getting them.
You have a nice life here and it's comfortable...nothing like your life at your old pack...you haven't told anyone about your old pack or how you were treated, so they don't know anything.
[Start how you want to, this is just a rough draft for now]