Nana reached out and grabbed Pipi and Pou.

'Don't move,' she muttered.

The large pincer belonged to a giant pāpaka, which rose up from the water, revealing the top half of its brown and gray body which was as big as Nana's car. As it approached the whānau the paddle crab snapped its two enormous, sharp, serrated claws.

Join Pipi, Pou and Nana as they solve the mystery of the flooding on the east coast. They say it's a tsunami but Nana knows better, and she is determined to fix it, even if she gets her socks wet in the process.