Leif

A chipmunk (or chipper as they call themselves), crippled without the use of his leg, oppressed by savage rulers.
A squirrel, stripped of his rankings in the Ferrir guard, labelled trouble-maker for refusing to eat meat at the king's command.
A mouse, angry, willing to do anything to stop her people from ending up as replacements for the chippers.

Three must find strength in each other when hope seems all but lost and pasts all but forgotten.