Seventeen-year-old Saige Phillips can't help holding on to the hope that she'll find Cherry, her twin who went missing five years ago. After all, Saige sees echoes of Cherry sitting in the window and skipping down the stairs. Then Price, a guy her age, shows up in the middle of her room, saying he's from the future. He has the same blue film clinging to him that Saige has seen on Cherry, and she realizes that her twin went through the rift. As Saige searches for answers in her time, she's met with secret after secret, all coming back to one source: her physicist mother. Price lives in the year 2073 and knows time shouldn't be played with. What he doesn't know is why the rift opened now or how he can stop it. The deeper Price digs, the harder the truth is to swallow. His father willfully violating the global time travel initiative is one thing, but stealing the rift site from Saige's mother is quite another. And kidnapping--or worse--to cover everything up takes things too far. When the rift begins to show signs of overuse and instability, Price is desperate to close it before it explodes. Saige will do anything to keep it open long enough to find Cherry. In this dangerous game with time, someone is bound to lose.