It all started out as a favor for Inuyasha which nearly killed her. Now she owes Sesshomaru a favor, a promise is a promise and Rin keeps all her promises. The only problem is Sesshomaru's what she's been looking for, he's perfect! Now it's owe him another favor to get what she wants or to walk away. What's one more favor?

Darien is a werewolf and the Alpfa in his pack. Serenity is a werewolf who lost her memories. And what? They are soulmates?