SISTER BEAR

Once upon a time there were three bears"" and if you're going to tell it like it is, this is the way it's told-a bedtime story about the cuddly relationship which exists between Steve and his sister, Anna. They're orphans, except for their foster father Pete and he's not immune, either. When he learns he's dying of cancer, he marries Anna but then gives her back to Steve. They return to the ski slopes which have always been their playground (both Vermont and Switzerland) and Anna grows up just enough to keep a penitential promise. . . . A fast run to norwhere in particular-""the last of the big hangups"" reduced to some instant incest and spangled with a little apres-ski sophistication.