Geeger the Robot and Tillie are the absolute best of friends. Usually, Geeger knows exactly how to make Tillie smile, whether they are sharing their favorite snacks, telling silly robot jokes, or working on glittery art projects at school. But today is different. No matter what Geeger tries, Tillie is just not happy. There are no laughs, no smiles, and definitely no twinkle in her eye. Seeing his best friend feeling so down makes Geeger want to do whatever it takes to fix it. Can a robot made of nuts and bolts figure out human emotions well enough to turn Tillie's terrible day around? This heartwarming chapter book explores the challenges of cheering up a friend and the power of true empathy.