Hazel and Twig are playing in the meadow one day when they discover an egg. "Let's hatch it together " suggests Hazel, and they sit on it to keep it warm. But an egg takes a very long time to hatch, so the sisters decide to bring the egg home with them. Hazel dreams of all the ways they will take care of their new pet after it hatches -- building it a nest, teaching it to fly, and finding worms for it to eat. But is there a bird out there who will miss their egg? Brenna Burns Yu returns to the enchanting miniature world of Korean-American mouse siblings Hazel and Twig in a story about sisterhood, observation and discovery, and lost things coming home. Abloom with delicate natural details, this tale is perfect for any kid who has ever asked "Can I keep it?"