Roberta, Peter, and Phyllis live in a beautiful villa with plenty of clothes, and toys, and the best parents ever. But one evening, two strangers come to the villa and take the children's father away. No one will tell them where he has gone, or why. Soon after their father's disappearance, the family moves from the villa to a tiny house near a busy railroad. The children find plenty of excitement-a landslide, a burning barge, and a stranded boy in a railway tunnel. But in spite of all the adventure, the children cannot help thinking about their father. What happened to him? Will he ever come home?