When a school bus driving woman (Tyne Daly) has a heart attack, she makes one request of her three daughters (Ally Sheedy, Marla Sucharetza, Marceline Hugo) - she wants them to find their long lost brother, who was taken away by their father (Jack Davidson) 16 years ago. What they discover is that while they have struggled, their father has become a wealthy man and their brother is in school at Harvard.

When siblings Judy and Peter discover an enchanted board game that opens the door to a magical world, they unwittingly invite Alan -- an adult who's been trapped inside the game for 26 years -- into their living room. Alan's only hope for freedom is to finish the game, which proves risky as all three find themselves running from giant rhinoceroses, evil monkeys and other terrifying creatures.