Luke Skywalker uses his snowspeeder and some festive lights to string together attacking AT-ATs, making them resemble eight reindeer pulling Santa's sleigh.
The episode opens with Princess Leia Organa, Han Solo, and Chewbacca running through the frozen battlefield outside Echo Base during the Battle of Hoth. Two rebel pilots fly their snowpeeder around a phalanx of approach AT-AT walkers, firing a tow cable around the walkers' legs. After encircling the Imperial walkers, they release several lights.
The lead pilot Luke Skywalker activates a red light, which activates the lights on the tow cable, causing them to glow in colors of red, blue, green and yellow. Leia, Han and Chewie cheer as the "Christmas" walkers march through the battlefield. Chewbacca also roars.