There's something fishy happening in Harrow Bay. When Judge Wilson finally catches a mermaid, the young woman brings chaos and calamity to Harrow Bay. It's all inadvertent, but she causes more problems for Jody. The human men who meet Allandria are enchanted and seem to quickly grow addicted to the mermaid, and it's becoming a huge headache. Jody's all too aware that Drake is also somewhat susceptible to the mermaid, and she's struggling with jealousy, which is a foreign emotion. Isabel is none too happy about their fishy guest after a merman broke her teenage heart sixty years ago. She doesn't trust any of them, but she won't let the mermaid distract her. She's determined to find a new purpose or rekindle an old one. After all, she's not getting any younger. Willa and Patty are making progress in their relationship, but when Liesel finds out, will it be the end of their fledgling romance?