When surfing Erik visits his identical twin brother for the first time in 15 years, it has fatal consequences.

As she takes in what she has done, Ingrid realises that she risks losing both home and family. In desperation, she begins to lie about the tragedy.

Ingrid tries to keep Erik hidden in the basement, but when Alfred needs help to retrieve his wrecked boat, Erik is forced to play the role of his twin brother Adam.

Erik returns to Unstad in an attempt to say goodbye to his old life. But when Karin almost drowns, he reacts completely differently to how Adam would.

Ingrid picks up Karin from the police officer's house and finds her revelations could have major consequences, while Erik discovers Adam's dark secrets. Frank begins to investigate the circumstances that led to the accident and gets a startling confession.

Erik confronts Ingrid over Adam's dark side and is surprised to discover that his brother's life was far from perfect. Karin struggles at school, but when Erik tries to play the role of a dedicated father, he only reinforces her suspicion that something is seriously wrong and she decides to take matters into her own hands.

Frank continues his private investigation into his friend's death, while Ingrid fights a desperate battle to prevent everything from crashing down around her. Both Karin and Alfred are dangerously close to revealing the truth, and Erik seems to be more part of the problem than part of the solution.

Frank lacks one last piece of evidence to make everything fall into place, and Erik does what he can to prevent him from grasping it. Ingrid settles things with both Alfred and Erik and dares to look ahead for the first time, but Erik has to make a choice.