Tanna finds a small, grey lemming, far too cute to turn over to the scientist who has sent the children out to gather lemmings for his research. Instead, Tanna deems Fluffi to be a family member and attempts to raise the lemming in her home. But when the lemming strays from its cozy bed behind the stove and into Tanna's mother's things, Tanna is forced to consider whether she has really done what is best for Fluffi. Is it possible to treat something poorly by trying to treat it well?