A magical underwater adventure, with an environmentally-friendly theme, featuring six resourceful and brave young mermaids. In this latest adventure, Jess finds herself facing whalers, rescuing sealife and coming closer to finding another stolen Snow Diamond.
Riding on the back of Monty, the Whale Express, to the Beachcomber Islands, the mermaids come under attack from a whaling boat. Jess devises an ingenious plan to outwit the whalers and to help the smaller sea life at the bottom of the ocean as well.
Jess puts herself into a lot of danger to save her friends, but her actions also lead the brave mermaids towards the next Snow Diamond.
