Iris has one very important job in her apartment building. She is the official elevator button pusher. It is her favorite thing to do, until her brand new baby brother comes along and starts taking over her special role. Feeling pushed aside and frustrated, Iris makes an incredible discovery. She finds a mysterious, discarded elevator button of her very own. When she tapes it to her bedroom wall and gives it a push, the doors open to reveal breathtaking, magical worlds right inside her room. Suddenly, Iris has a secret escape where she can explore wild jungles and starry skies all by herself. But as she embarks on these amazing solo adventures, she begins to wonder if exploring the universe is quite as fun without someone to share it with. This dazzling picture book takes young readers on a soaring journey of imagination, showing that the most magical discoveries are the ones we share with the people we love.