Near a Pokemon Center on a snow-covered seashore, Pikachu and its friends make a Snorlax out of snow. That night, they wake up to see the snow Snorlax outside their window, come to life! All the Pokemon sneak out to play with the Snorlax who leads them out to a fruit tree growing on a cliff. Snorlax wants the fruit, but the cliff collapses under Snorlax's weight. Fortunately, everyone lands on the Snorlax which acts just like a sled--but it slides all the way out to the shore and right onto a drifting ice floe!
The drifting Pokemon are sucked into a whirlpool, but Snorlax freezes the whirlpool into an icy viewing platform where everyone can watch Water-type Pokemon swimming through the sea. The Pokemon try to sail away on a boat made of ice, but it falls apart and two Lapras come. They bring them to a land of Snorlax snowmen where the snow Snorlax can join its friends, then take Pikachu and the gang back home. Pikachu and its friends fall asleep and wake up the next morning, back in the Pokemon Center. Their snow Snorlax is still outside--is it all a dream or just some wintertime magic?