Pediatric nurse Alya accidentally falls into a mermaid kingdom—and discovers she can hear the little prince’s thoughts! Facing royal suspicion and a hostile royal caregiver, she overcomes one crisis after another, winning over the proud, adorable prince until hers are the only arms he wants. When she risks her life to save him during a storm, the guarded mermaid king begins to fall for her, sparking a love that transcends the depths of the sea.