It’s Christmas Eve and one of Santa’s reindeer is sick. Mike makes it his mission to save Christmas and does everything he can to nurse the reindeer back to health, making sure he is included on Santa’s nice list. Meanwhile, Mr Cuddles is sent on a wild toboggan ride, Squirt gets stuck in a giant snowball and Mike learns that Vikings like to have fun in the snow too! So join Mike on his next mission to make it a very Merry Christmas.