The Chronicles of Hydea

While burying a time capsule, two kids from Earth uncover magic crystals. Now their bodies are dying, and it all goes downhill from there.

Catherine "Cat" Taylor and Darrion Comis have resigned themselves to dying when they are thrust headlong into an interplanetary war, complete with space battles, a quirky team, a nefarious villain and the occasional romance.

Book One in the series.