What if you don’t remember your past, and the future may never come?

Celia has been living on a desert island for three years. Who is she? Who were you before? And the main question: what circumstances brought her here? All she knows is that somewhere out there, over the horizon, she has a sister, Casey. The girl's life turns into endless attempts to get off the island and find her sister.

Elsewhere in the world, Casey decides to find any clues that will lead her to the solution to Celia's disappearance. However, she still does not know what secrets her sister kept and how dangerous they can be for all humanity.