Oof, all right. So, let’s see... Flameheart was the youngest of four in his litter, but he lost his two brothers to greencough before they were made apprentices. His mother was the deputy of the Clan, at the time, but shortly after he and his sister became warriors, the previous leader died and his mother became leader. He’s ridiculously popular in his Clan, for whatever reason (probably his looks). He’s currently a warrior.
I don’t know why yet, but one day, a higher power or StarClan chose to forge a link between Flameheart and Nightwing. And that’s where our story starts. The day after Nightwing’s Clan drove off a family of foxes, also.