Ten-year-old Jacob, a double amputee, finds himself, along with his eight-year-old brother, accidentally sent back in time to the year 1910. In this era, the wonders of electricity were just beginning to be realized, and many people believed that the sky was the limit! This made his state-of-the-art bionic prosthetic arm and prosthetic leg a fascinating sight that feels possible but still raises eyebrows. Jacob enjoys playing robot with his advanced prostheses, but soon realizes that the term "robot" doesn't even exist in 1910. He discovers however that the children he meets are familiar with a metal-man called Tik-Tok in the Osma of Oz story book, from the Wizard of Oz series, so he renames his play "playing Tik-Tok" instead. He and his brother make many new friends playing Tik-Tok. While they wait to be rescued by their parents, an ambitious inventor notices the remarkable nature of Jacob's prostheses and becomes determined to steal them so he can patent the technology and become wealthy. Discover how Jacob and his brother escape the clutches of the inventor in this thrilling children's time travel adventure!