Siblings Lucy and Andy are just like everybody else. They have to babysit their little brother, pick up their tools, and clean their caves. The only difference? Lucy and Andy live in the Stone Age! Discover the laugh-out-loud adventures of this paleo pair as they take on bossy teens, create cave paintings, and (try to!) join a mammoth hunt. But nothing can prepare them to meet their strangest prehistoric neighbors yet: humans. Available in softcover and hardcover editions.