Sheila is picking up shells and other treasures one day after high school with her friend, Lani, when she stumbles onto a pretty rock wedged between two larger rocks on a Hawaiian beach. After she and Lani manage to pry it loose, they both sense it is no ordinary find. Later that night, Sheila places the rock next to her nightstand, feeling a strange yet undeniable attachment to it.

After summoning assistance from her biology teacher the next day, Sheila cannot help but wonder if the rock has magical powers, especially after her mother retells the story of an unusual rock find years ago in Kona. As Sheila and Lani embark on a brave yet curious quest to unravel the mystery of the rock, the girls are led to a university lab in Hilo where they learn a shocking truth that soon places them in danger as they attempt to learn the truth about a seemingly ordinary rock that may not be so ordinary after all.

In this exciting adventure, two high school girls set out on a probing journey to discover the history–and possible magic–behind their strange Hawaiian beach find.