This gently poetic and beautifully illustrated lift-the-flap picture book follows Grey Mouse, who is content with his small, cozy home—until he spots something “better” and forgets to appreciate what he already has. Joined by White Mouse, the two venture to meet Brown Mouse, the owner of a grand mansion atop a hill. But as they tour the lavish rooms and treasures, a surprising realization emerges: true happiness often lies in the simplest places. The story culminates in a thoughtful lesson about envy, gratitude, and what truly makes a home special.