Even robots need to recharge in this cheeky picture book about the importance of naptime. Harper the robot does not like to re-charge his battery. His classroom is full of fun things to do, but he can't do any of them when he's all plugged in. So what's a busy bot to do? Author-illustrator Kelly Leigh Miller puts a whimsically futuristic spin to the age-old dilemma convincing nap-resistant kiddos that everyone needs to take time to rest.