Ruby is a seemingly ordinary teenager trying to navigate the challenges of high school. Living in the coastal town of Oceanside, she juggles friendships and schoolwork while hiding an extraordinary secret — she belongs to a royal lineage of mighty krakens. Her grandmother is the formidable Queen of the Seven Seas. As Ruby struggles to fit in, her yearning for normalcy is constantly threatened by her heritage and the responsibilities it entails. The nuances of teenage life become increasingly complicated as she contends with unique powers inherited from her ancient ancestors.

During a pivotal school event, Ruby finds herself caught in an age-old feud between the krakens and the mermaids, who have a contentious history. This rivalry intensifies when she encounters Chelsea, a new popular student who harbors secrets of her own. As tensions rise, Ruby must come to terms with her identity and abilities to protect both her friends and the oceanic world she is destined to lead. With unexpected allies and adversaries, Ruby's journey becomes one of courage and self-discovery as she learns what it truly means to embrace who she is.