Irene loves her family, especially when her father is home. But Papa is gone a lot, and so Irene makes a wish for him to be with the family more. Her wish comes true in an unexpected way when Papa, who was drinking lemonade in the garden at the exact moment Irene made her wish, swallows a watermelon seed and begins a surprising transformation.

Slowly and beautifully, day after day, Irene's father turns into a tall, stately, and loving tree. Papa is a beautiful tree, but Irene wants her real Papa back. How could Irene have made such a wish, and how can she make things right?