Grandma. Nana. Gammy. Mimi. Grammy. Busia. Gigi. Yaya. There are so many names to call a grandma, but Construction Cousins call their grandma Gaga. The Construction Cousins, five little diggers who have a very special relationship with their grandparents, are back again When they are getting ready for Christmas, one of the special gifts from Gaga breaks. Can the diggers find the spirit of Christmas and give something of themselves?