Sal was once an award-winning investigative journalist and author, uncovering government corruption and public scandals. Two years ago, her son's death robbed her of a willingness to engage and her ability to question. Now, as she comes to terms with her loss, her teenage daughter Beck brings home Taki, a Japanese surfer, to stay with them. Sal is unsettled by his reclusive behaviour and unexplained past. When her calculating brother Jack visits with his new, younger girlfriend, Sal is awakened to a sense of danger she has long forgotten. King Tide was commissioned by HoriPro Inc., Japan.