When Coleman Ettinger (Jason Robards, Jr.) and his wife, Gene (Piper Laurie), attempt a mystical experiment, an accident transports their minds into teenagers Bobby Keller (Corey Feldman) and Lainie Diamond (Meredith Salenger), while the kids end up trapped in a dream state. While Coleman enjoys his youthful existence for a little while, he soon longs to return things to the way they were, which proves to be more problematic than he had imagined.