Not ever. Not once.

But how hard can it be? He’s Googled front crawl and he’s found his dad’s old pair of trunks. He’s totally ready.

What he’s not ready for is the accident at the pool – or how it leads his mum to a sudden breakdown.

Now, with the help of friends old and new, Cymbeline must solve the mystery of why his mum never took him near water – and it will turn his whole life upside down…