In this episode the focus is on Gretta the ground squirrel. The life of a ground squirrel is never dull. Every time the young mother ventures out of her burrow, she herself becomes bait. Can she find enough food for her pups before becoming another animal's dinner? Is she clever and fit enough to survive and will her pups be able to make it out of the burrow? Gretta may be small but this is one big adventure packed with danger!