The series is set at a time when America was in its vibrant and colorful adolescence - from the 1860s slums of New York to the violent and lawless American West of the 1870s. Yet, despite its historical backdrop, "Billy the Kid" is a story with surprising relevancy, focusing on America's twin obsession with two seemingly timeless subjects: celebrity and guns.
In the mermaid-obsessed sea town of Bristol Cove, everyone's lives will change when actual mermaids come ashore, causing sides to be taken, loyalties to be tested and a war between man and mermaid to begin.