After the whale strikes the Zodiac, Rowan wakes in the sea during the storm and fights panic as she tries to orient herself and breathe. Terrified that she may have lost Raff, she dives and searches until both of them surface alive a few meters apart.

Rowan swims to Raff and grabs him. Raff is shaken and in pain, with an injured arm, but Rowan focuses on getting them to shore because survival matters more than understanding how they escaped. As Rowan supports him in the water, the crisis triggers memories she has long tried to suppress.

Once they reach the black sand, the others run to them. Rowan loses track of time in shock, but she and Raff make it to the hospital, where Raff's arm may be broken while Rowan appears physically unharmed.

All five of them sleep on camp beds in the hospital. As Rowan drifts in and out of sleep, the island's atmosphere of ghosts and loss brings back a deeply personal revelation: the dead boy haunting her memories was her little brother, River.