The Little Mermaid's children are the key to a prophecy about ecological disaster...but are they saviors or destroyers? It seems they might be both! The tour heads out to Russia, and Benjamin and Seth go with the dancers. They hope to stop their sibling Teruto, who has possessed tour sponsor Gil Owen, from sabotaging a nuclear power plant. But Gil won't be stopped - he's willing to sacrifice anything to get his way. His only concession to reason is to try and get his beloved brother Seth out of the disaster zone...but his attempt to kidnap Seth and return him to New York may backfire!