Out of This World and Back — Sandra Golden

The day J.R Black and Helaina Unity tuned sixteen was a day they would never forget. Not only did their parents give them each a Ford Mustang, but they used their Jewel Machine for a trip that takes them back in time, and millions of miles from Earth. Through the magic of the gifts that the Captain gave them, they were given the machine settings which would take J.R and Helaina back in time to the space ship that was carrying their people to Earth. They would spend a week learning, watching and absorbing skills they would need in the future, and go on some fun, and out of this world adventures before returning to their own time. J.R and Helaina don't have much time to rest from their trip because Helaina has visions that the Chin brothers are about to cause more trouble, and they set off with their entire family for another adventure One more dangerous than anyone realizes.