College, grades, extracurriculars—who cares? Sixteen-year-old slacker Callie James would rather make robot creations and surf waves with her best friend Will. Then she discovers a mysterious glowing rod under the ocean surface, and her entire world turns upside down. One, her hands start glowing (weird). Two, she can now control people (awkward). Three, she accidentally brings her robotics project to life, and now he’s literally eating her homework. Only the reclusive Dr. Ormandi knows the truth: Callie is a Luminaut and it's her destiny to reunite the shattered multiverse by collecting the glowing Light Cores on different worlds. But first, she must repair the World Diver, a fifty-foot tall dimension-hopping robot. Then Nate crash lands into her life. He's hot. Funny. Crazy about her. One problem: he's technically dead. Oh, and he insists her quest will destroy everything. Hunted by murderous interdimensional phantoms and plagued by insecurities, Callie must protect her family and friends, plus figure out who to trust. And all before a deadly evil snuffs out her Light for good. A sassy YA science fantasy with adventure, STEM, a side of romance, and an adorable robot.

Callie James crash-lands the World Diver into an alternate dimension. She kind of needed a Seer to help with piloting. Too bad she was busy escaping evil hottie Nate Ormandi to worry about that. Now she’s stuck on Tremurheim, a mysterious world of tree-vikings and soul-sucking mist monsters. But somewhere on the planet a Light Core calls to her. Now she just has to find it as part of her quest to unite the multiverse. A quest she’ll complete no matter what stands in her way. The only local who will help is Toran Rykjiersen, who’s basically a jerk. But he’s also desperate to get his little sister Heike off Tremurheim—even if that means aiding a dangerous “skyfire sorceress” like Callie. Meanwhile, evil dude Nate must capture the Light Core of the world Ictari. As an undead Shadowmancer, finding Light isn’t his forte, but if he fails, his master will end him the rest of the way. Permanently. As Luminaut and Shadowmancer race to find the Light Cores, the line between hero and villain blurs. And the quest that Callie holds dear might lead to the very evil she hopes to prevent.