In the coastal town, a 20-something owner of a dive shop, Arthur Curry, resides on a houseboat near the coast guard base where his adoptive father works. His closest friend, Eva, runs the local beach bar. The mystery of his mother's disappearance in a plane crash, which occurred ten years ago, still lingers, leaving Arthur with survivor's guilt and a burning desire to uncover the truth about her fate.

As a mysterious phenomenon awakens within him, a young adult diver living in ...