To the Margins of the Earth

Odd-on-the-Paws is a clumsy ground squirrel who is steadily growing too big for the den. At the same time, his brother seems to be shrinking, getting sicker by the day. More squirrels fall ill and soon the leader of the colony is sick. At the same time, the otters that patrol the sea right outside the burrow are slowly disappearing one at a time.