On a class excursion to a cave with stone age paintings the clumsy Rex gets lost. A mysterious crystal opens a gateway in time and sets him back to the stone ages, where he meets a group of prehistoric fellows and the gorgeous Eba.
Taran is an assistant pigkeeper with boyish dreams of becoming a great warrior. However, he has to put the daydreaming aside when his charge, an oracular pig named Hen Wen, is kidnapped by an evil lord known as the Horned King.
"Barbara Hammer's Optic Nerve is a powerful personal reflection on family and aging. Hammer employs filmed footage which, through optical printing and editing, is layered and manipulated to create a compelling meditation on her visit to her grandmother in a nursing home.