A weekend adventure on a remote island in the middle of Kaneohe Bay is shattered by an audacious midnight theft of a boat. Just as Kensington Stone manages to organize an all-island searchTeri White, Stone's partner, receives an urgent phone call from Pops. Their friend and Pops daughter, Viane Koa, has disappeared while hiking on the Island of Hawaii and the only clues they have are a pickup truck that had been hot-wired and a hiking hat found far off trail on the slopes of Mauna Loa.
Stone and Teri's instincts to help become necessarily divided: on one hand they want to help their friend find his boat, feeling somewhat responsible for his loss, but on the other hand locating Viane is of primary and utter urgency.
While the search for the missing boat and for Viane advance and gains footing a sudden earthquake rolls across the Big Island pushing Viane closer to certain death.