When Sally and Mary Lou Woopsie are staying with their Aunt Bella, they meet Tommy and Sandy Tootle. The children take a picnic and head up the mountains for 'some fun in the snow'. Tommy shows the others how to make a 'snow log, a long roll of ice, which the children push into the river. When the snow log reaches a downstream village, it is mistaken for a 'dreadful white monster', a snow serpent! The villagers and their General take guns to hunt the Great White Serpent and make heroes of themselves. All the while, the children spend their time meandering home and sharing cups of hot chocolate with a neighbour.