When a young woman (who was abducted as a child) returns to her hometown, her family is thrown into turmoil. Her name is Alice Webster. Two years later, detective Julien Baptiste resumes the search for another missing girl.

The Webster's struggle to cope with the return of their daughter as the search for another missing girl intensifies. The shockwaves of Alice's return are still felt two years on.

While Julien pursues the Giroux case in Paris, a devastating act sets to tear the Websters apart. Two years later, Gemma discovers a vital clue.

While Julien continues the hunt for another missing girl, the Webster family implodes. Breaks in the case during 2014 and 2016 point Julien towards two key suspects.

As Julien gets closer to the truth in 2014, his body weakens. Two years later, a third suspect is thrown into the case.

During 2015, a new piece of evidence surfaces. A year later, Julien's investigation is closing in on the missing girl.

Julien finally uncovers the truth about a missing girl, but after the police dismiss his theory, he is forced to take matters into his own hands.

The events that led up to Alice's return to Eckhausen in 2014 are finally revealed as Sam and Gemma join Julien in a desperate race against time.