A boy named Taro forms a friendship with the mysterious Wonder-kun. With Wonder-kun as his guide, Taro sets off on a trip through space in search of adventure. The story uses the New Year's first dream as its motif. Broadcast on NHK for children spending the New Year holidays at home in front of the TV, the special combines live-action footage with animation. The story portion runs about 11 minutes within a 20-minute program.