THE MAGIC OCEAN SLIDE. On the hottest day of the year, Katy, Cassie and Zia imagine a water slide coming out of Katy's bedroom window. As they plunge into an underwater world, they can't wait to explore. But when they meet a dolphin in distress, they realise the ocean is in big trouble . . . THE GIANT CONKER. The friends' latest adventure takes them to an enchanted forest where they set out in search of the biggest conker in the world. But the trees around them are dying - and where are the animals? The girls must try to work out a way to help . . .
THE WISHING STAR. Katy, Cassie and Zia venture into outer space. With the help of Katy's cat Thunder, they navigate their way to the Wishing Star. But as they prepare to make their wishes, the friends see the destruction happening back home, and realise they have a greater mission: to save the Earth!
THE NORTH POLE. Winter has arrived, and the girls decide to picnic at the North Pole. But before they can enjoy snowflake-shaped sandwiches and mountains of ice cream, they must first win the trust of the Arctic Queen, and discover why the North Pole is melting.
