Noah and his sister prepare for a family meal where Noah plans to reveal his gender transition. He arrives at Christmas dinner seemingly unchanged, with a new mustache. Despite the father’s anticipation of sharing big news, Noah and his sister inadvertently draw attention to family dysfunctions. Meanwhile, their grandfather, showing signs of Alzheimer’s, struggles to remember when Noah became his grandson.

Christmas comes to the Cosmos when Roger and Fran Peoples and their son Benny try to celebrate the holidays in their new home on the planet Zolognia. Everything seems to go wrong until their alien neighbors, the Zox's step in to help. Misunderstanding just about everything about Christmas, Charlick and Mavo add bizarre and funny twists to old Yuletide traditions, and find out that in the end, that it's truly the thought that counts.

Yogi Bear, Boo Boo, Huckleberry Hound and more Hanna-Barbera characters get lost and decide to spend Christmas by vising Casper, the friendly ghost. But soon they encounter a not-so-friendly ghost.

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 mischievous attempts of two villains to ruin the fun.

A young girl wishes Christmas was over for good, and her wish is granted with unexpected consequences.