Spring is the time of an ice drift on the river. Two friends, Wolfy and Hare, carried away by their running in the forest, suddenly find themselves on an ice floe among the river rapids. Cold stream hides many dangers, but their good imagination comes to help. And now they are not on the floe, but on a wonderful icy frigate, set sail across the seas! Brave captain Wolf and Hare at the helm. But be careful! A waterfall is ahead!