The book starts off quite slowly but after the first two chapters or so, the story line and the characters begin to weave together producing a magical picture. They create a world that has been turned upside down, by a tragic flooding, which engulfs the city of Grimsdon. Therefore, the story becomes a fight for survival for a group of children, who try to make the best of a bad situation. However, you make up your own mind as to whether they achieve this or not. Nevertheless, the courageous children have to overcome many hidden perils such as collapsing buildings, coming face to face with deadly sea monsters and fending off nasty kidnappers. They also get the occasional slap in the face from a fish or two along the way!
The characters are easy to relate to and certainly make for a good read. The main character of the group is the feisty heroine 'Isabella', who fights like a tiger and can duel well with a sword. The brains of the group is Griffin - his inventive skills help to create a power source with the help of tidal waves. Whilst the two twins (Raffy and Bea) plus their friend Fly, make up the rest of the group. That is until the day when a mysterious boy brings the flying machine called 'Aerotrope' into their lives and shows them the bigger world.
The story is generally fast paced - uncovering the mysterious world inside Grimsdon and the challenges that are faced for survival. The ongoing friendships between the group are poignant and produce many memorable moments within the book. As a result, you will find yourself laughing and crying, both in equal measures, as you travel along their path of discovery.
This was such an enjoyable read, that when I came to the final page, I was left feeling sad that I had reached the end. I would really love to see another adventure involving all the characters, as they left a small, but memorable imprint and therefore, I would like to meet up with them all again.