After damaging an experiment involving a rare plant from Boggy Creek, Verity is banished from Elizabeth's lab. To her horror, she starts growing scales and gradually turns into an amphibious monster! As rumours of the strange creature spread, Verity is delighted to find she can terrorize Garth and decides to pay out on him. Knowing an oblivious Garth and Elizabeth are returning to Boggy Creek for more samples, Sacha realises Garth could be in real danger.