Nasugbu Batangas- a quiet coastal town where the sea has always given life, and kept its secrets.
Kael is a young fisher with big dreams: earn a college scholarship, leave his small town, and build a better life for his family. But when he witnesses the ocean glowing with impossible blue light - a sight no one else can see - his world begins to shift in ways he never imagined.
Cleaning out his late mother's belongings, Kael finds a carved conch shell that whispers in an ancient language he somehow understands. His grandmother finally reveals the truth: their family has guarded the Batis of Kalikasan - a mystical underwater gateway connecting Nasugbu to a hidden realm - for generations. As the Tide Keeper, it's Kael's duty to maintain balance between the two worlds.
But balance is breaking. Fish schools are vanishing, strange creatures haunt the shores, and a wealthy developer arrives with plans to build a resort directly over the gateway. With the help of a journalist investigating environmental changes and a mysterious woman from the hidden realm, Kael must master ancient rituals and find three sacred objects to restore the barrier.
As the gateway weakens and tidal surges threaten to destroy his home, Kael faces an impossible choice: pursue his own future, or embrace his duty as the Tide Keeper and protect the land that raised him. In the end, he learns that true wealth isn’t found in leaving home – it’s in fighting to preserve it for generations to come.