When a freak hurricane shuts down the island cricket match and blows away Uncle Charlie's journal, Taylor, Nori, and Ellis go in search of it, only to find a creepy old house that contains a fifty-year-old mystery.

On a volcanic island that has recently opened to the public, the gang finds a talking shell that encourages them to indulge in their fantasies. Then, when the volcano starts to erupt, they must escape not only the island but the power of the shell.