Muddy is a young walrus that Kallik and Taqqiq consider a friend. Kallik and Taqqiq think that Muddy is another bear. Muddy and the cubs play many times when Nisa is away hunting. Kallik and Taqqiq go to look for Muddy once, and find many other walruses.
Not knowing the danger of walruses, they walk up to one thinking it might be Muddy's mother and ask her if Muddy can play. The walrus chases them away, but luckily Nisa comes and saves her cubs. Nisa later tracks Muddy and Kallik and Taqqiq have to save him by chasing him away.