After a transplant, Florence discovers that her new heart came from a Belgian woman, Ana, who died after a car accident; but was it truly an accident?

Florence hopes that understanding her donor's life might help her to support her own daughter; Ana's father Simon is convinced that she was murdered.

Her strong determination to help Simon investigate Ana's death means that Florence unwittingly pushes Zoe into the path of a drug dealer, Jan.

Vincent is furious when he uncovers Florence's lies and her collusion with Simon; uneasy with the police, Jan makes plans for a getaway.

Ignoring her personal issues, Florence joins Simon in Antwerp to look for Ana's mother; Zoe, feeling a bond with Ana, decides to join the search.

Now dangerously ill, Florence is rushed back to Biarritz; Simon ends up in the hands of the police; can he convince them of the truth?