When Rikki agrees to look after Emma's younger brother, Elliot, she reluctantly takes him to the beach for his surfing practise. Rikki takes great care to stay on dry land whilst Elliot is in the water, after all, she wouldn't want to turn into a mermaid in front of a beach full of people! But when Elliot gets into trouble, Rikki has no choice but to jump in the sea and save him. Being rescued by Rikki has a strange effect on Elliot and he starts to develop a crush on her, which Rikki isn't exactly pleased about! Will Elliot be able to keep her secret?