A little girl is frustrated when she realizes she's been to only one place in the whole world. To fix this problem, she builds a fort and imagines that she has traveled to the rain forest. But, her mother has a better idea. With the World Mastercard, the family plans their first big trip: a vacation to London. As the girl at one point is resting in her father's arms, the mother hands her a small box of pins for her world map. She'll need them before long.