As a volcano on Hawaii begins to rumble, family crisis brings an unlikely couple together.

Annie's the brainy type, quietly assisting her father in his volcano research. She's always admired her brother's friend Mano for his outgoing athletic ways, but her devotion turns to disdain after Mano's mistake results in her older brother's untimely death.

Mano's mistake haunts him. It cost his best friend's life. But just as he's bringing Tomi's belongings to his family, Mano discovers Tomi is alive-and in serious danger. That danger threatens to spill over to the rest of the family.

Annie and Mano join forces to discover the source of the threat against the family, even as a long-inactive volcano rumbles in the distance.