Holly and Jessica are pulled through a sparkling portal and transformed into mermaids in a magical underwater kingdom. As they explore glowing reefs and meet enchanting sea creatures, they're guided by a helpful Sea Wizard and a kind Queen who watch over the ocean.

Together, they uncover a hidden secret beneath the waves. A secret that will change their lives forever. Before long, they discover the dangers of poisonous seaweed deep beneath the ocean. Will they unlock the magic that will help them find their way home?

Dive into Holly and Jessica's unforgettable adventure full of friendship, mystery, and ocean magic!