Businesswoman Sophie Throckmorton plans to sell the Jellystone Lodge, devastating the regular guests – including Huckleberry Hound, Augie Doggie and Doggie Daddy, and Snagglepuss – and it's up to Ranger Smith, manager Mr. Dingwell, and the newly awake Yogi, Boo Boo and Cindy keep the Christmas spirit alive amidst the…