Franzie Hofer, 17, has a permissive, adoring Papa, and a Christmas stay at Sun Valley leads him to believe that his was not the right way to bring up a daughter. For Franzie has left college to work there and her father's visit introduces him to the Kahoona (Cass), a drifter, beach and ski bum, who has become Franzie's whole world. Hofer also becomes involved with B. Kelly, a wealthy widow, who had known Cass and, in finding him again, is ready to latch on to him for keeps; ready, too, to turn Franzie's romance inside out. It takes two snow slides -- one to kill a ski instructor, and the other almost to kill Cass, to settle the issue for the three involved, and to send Hofer home with a sense of thankfulness and relief about his daughter. This brings the Gidget type of youth a bit further along, finds decency and intelligence does develop in spite of seemingly aimless progress. Weighs in light.