Elastic Island Adventures: Rainbow Cove is the third in a fantasy action-adventure set in the South Pacific. Kiri, Jed, and twins Emma and Ethan, discover an 'elastic' island that sends them pinging across the ocean to a variety of destinations. When they visit Rainbow Cove, they discover creatures called frivals who are responsible for maintaining the colours of the island. But the frivals have gone on strike after the local people didn't like them changing all the colours around - and now the island is slowly fading to grey. Because of this the chameleons are in danger of dying, so the children set out to find the frivals missing leader in the hope of saving them. But will they succeed before it is too late?