Follow a fictional British Royal Family-King Rufus and Queen Eleanor and their children Peter, Rosalind, Eddy, and Alex-as they honor the annual Yule Hare Festival. The family must battle having to rule their kingdom while maintaining a normal family at the same time. Meanwhile, the festival continues with the parties and feasts that comprise it.

Kieran Culkinas Peter (voice)
Horatio Sanzas Allistair,Knight #1, Gorgeous, Mud Dad
Peter Serafinowiczas Frederick, Announcer,Demonic Hare
Nonso Anozieas Demonic Hare, Gregor
Fred Armisenas Gavin, Brody
Julian Barrattas Harold the Guard, Ace
Jermaine Fowleras Demarcus
Ellie Kemperas Mudria
Ken Marinoas Snake
Shion Takeuchi
Scot Blackwell Stafford