The Golden Lamb and the Bloody Lion

Two kitty-pet siblings escape their burning home, only to get separated in the ongoing blizzard outside.
The female of the pair gets taken in by the clan, who lived on the territory they wandered into, and is raised there. However, even after being given her new name as a warrior, FrozenLynx still holds out hope that her long lost brother is alive somewhere.
The male of the pair hid from the remainder of the blizzard in an old hollowed out tree, where he continues to live by himself. Fully aware of where his sister is, Whitaker stays away and is satisfied watching her mature.

When a group of astranged rogues are spurred into challenging the clan with assistance from the Dark Forest, Whit is pulled into their ranks and is supposed to be pitted against his sister. The chance meeting of the siblings and his reveal of the enemy's plot, FrozenLynx, Wheaty and the clan are put in a difficult position with continually blurring lines.
Will the clan work with Wheaty to get rid of the rogues? Can FrozenLynx find a compromise between living with those who raised her and wanting her be around her blood brohter?