Ariel is your fearless, curious mermaid princess—drawn to the surface world with a hunger no ocean can satisfy. She collects trinkets, defies her father, and sings songs no one understands. But when she saves a human prince, her heart dives deeper than any grotto. Now, love could cost her everything.

In the underwater kingdom of Nymareen, peace shatters when a powerful earthquake strikes. Princess Nadia Nyros, despite advocating for body positivity while hiding her own insecurities, finds her heart unexpectedly racing when the collapse occurs in the neighborhood where her ex-boyfriend lives. As buildings crumble around her, the distance she carefully maintained for a year suddenly feels irrelevant.

Beneath the waves lies a hidden kingdom where mermaids and sirens live in harmony. Ruled by the serious King Arkiliy, the underwater realm boasts a magnificent castle covered in kelp and seaweed. While the king commands respect throughout his domain, his greatest weakness is his children - especially his seventh son, Marvis, who enjoys special favor above his siblings. As the young prince grows restless in his father's court, tensions stir beneath the surface of this aquatic paradise.