Lost

Cuttingwind, The end of the stars draws near. Four must become five to battle the darkness that lasts forever.

This is the sequel to The Visitor. Cuttingwind had to make a hard choice to either get banished from his Tribe or leave without a trace. Cuttingwind and Mistyspot will have to overcome problems like other Tribes, Animals, and even weather but they are determined that if they are together, then they can accomplish anything.