What do you do when your six-year-old daughter starts telling you about her other mother, her other life? This is what happens to Anna after her daughter Ava's father disappears, leaving behind a traumatised little girl. After three days of silence, Ava begins to share mysterious memories with her mother, and to draw pictures of a place she's never visited. Anna knows that the only way to find the truth is to travel to the place Ava is talking about - a tiny island called Seal. There, on the edge of the Atlantic, where their past and their future meet, there might be a whole new world, a whole new life waiting for them...