It's all change at Santa's workshop in the North Pole.
All the reindeer have left to do their own thing around the world. Only Rudolf remains to steer Santa's new high tech sleigh - that's when he's not bungee jumping or doing any of the other extreme sports he now loves.
Santa has been forced to upgrade his sleigh to keep up with all the extra Christmas presents he needs to deliver. It now has so many new gadgets he needs even more help from his clever elf friends.
However, one year Rudolf returns from his holiday like a different reindeer. He now loves bananas and spends all his time eating them and acting strangely. This makes poor Mrs Claus very worried about Santa and the sleigh.
Things quickly start to go wrong on Christmas Eve after the new sleigh takes-off, making all the elves at the North Pole even busier than usual. Little do they know this disaster was no accident, and everyone must help to save Christmas.