While waiting to leave Mars before it burns up just like the Earth before it, Liam and his friend Phoebe discover some facts about time and space and realize that the human race is just one of the races trying to survive in space.
Liam and Phoebe, having barely escaped the exploding sun with their lives, travel to the rogue planet Delphi, where they hope to find help for their injured parents and pass along the truth they discovered about the destruction of Earth.
"Having barely made it through the battle at the Centauri system with their lives, Liam and Phoebe awake on a mysterious ship in the middle of a dead universe. The ship bears the markings of a human starliner that disappeared decades ago--but even more disturbing than that is the massive alien machine floating in the starless space before them. A machine long abandoned but now showing signs of life. A machine that has begun speaking to Liam in a voice...
Having each been awarded a Fellowship for Alien Detection (a grant from a mysterious foundation dedicated to proving aliens exist), Haley and Doger and their families set off on a cross-country road trip to prove aliens exist --but someone ... or something ... is doing everything in its power to make sure they never reach the vanished town of Juliette, AZ.
As band manager for the up-and-coming DangerHeart, seventeen-year-old Summer Carlson navigates a relationship with the lead singer and decides whether to act on information that could rocket the band to stardom.
Recounts the events that occur at the end of seventh grade, when a group of friends plan to trick Carlos, an annoying "problem" student who says he is visited by aliens, while they are on a field trip in the mountains of New Hampshire.