In the year 2019, 12-year-old Eli Sands, code name: Danger Boy by DARPA (Defense Advanced Research Projects Agency), happens to become part of his father's experiment, he travels through time. DARPA forced his father to continue his time-travel experiments despite the fact that Eli's mother, Margarite, was in one of the experiments before, she disappeared in an explosion of time which is why Sandusky, his father, stopped using WOMPERs (Wide Orbital Massless ParticlE Reversers). Going back in time, Eli needs to learn about a deadly disease, search along for his mom, and make sure to stay alive along the way of his major mission. Also with the help of new friends through time, a cerebral dinosaur named Clyne from an alternate Earth and from ancient Egypt, Thea, a girl scientist. The most interesting thing about this book to me was the technology because of the time it took place, in the future the technology is different from our own, I myself happen to be way too attached to it. I liked this book because of the idea of time-travel in general, and the idea of an alternate Earth reality. One part that I liked was about all the alternate Earths moving along crosscurrents of the Fifth Dimension, Clyne describes our Earth as 'Earth Orange' because you can taste colors, that color happened to be an orange. When Clyne described our Earth, he described it as being a bit similar to his planet, "The actual colors of this Earth, by the way, are similar to the blues, greens, browns, and yellows of our own planet. But I'm calling it Earth Orange because I want to, and because I get to. As far as I know, I discovered it. It's not mentioned in any of our texts or histories or on our maps. Do I get extra credit for that?" I thought that this part was humorous because it's relatable, he calls it Earth Orange because he wants to, considering that it was discovered by him and not seen in any of their sources, it's like something I would do if I found something that wasn't said in any of the given sources and ask if it could be extra credit. I really look forward to reading more of the books in this series.