4I-go Robot is waiting for humans to return to the planet. Every day, I-go and the other robots work to make the planet ready for humans to come back and live once again--but they never come. Other robots are starting to give up hope, but I-go believes it'll happen someday. This futuristic picture book imagines a world of robots and their relationship with humankind. Readers will enjoy brilliant illustrations of this otherworldly landscape and its robot inhabitants. The book will also challenge readers to think about human impact on the environment.