Sybille and Édouard are still at odds with each other as Sybille now accuses him point-blank of having an affair with Vanessa. The mysterious neighbor doesn't cooperate with Édouard's scheming but pursues her own agenda.

Sybille and Édouard meet for drinks at Vanessa's apartment. Vanessa finally admits that a tenant lives with her, but he remains elusive. Vanessa's dubious explanations do not satisfy Sybille and only add to her curiosity.

Sybille finally finds an opportunity to knock on the door of the stranger who has been spying on her for weeks. She braces herself and confronts the stranger.... Or is he a stranger? A pleasant surprise is in store for her.

Édouard's life is starting to unravel as the awful truth comes out. Benoît makes some startling revelations to Sybille, but she is not entirely surprised. It's not all gloom and doom for her, however, as an old flame is rekindled between them...

Vanessa is coming over to Sybille's house, which is now Benoît's as well. They don't need to spy on each other anymore, but Vanessa is bringing her binoculars anyway. As for Édouard... justice has prevailed.

In part one of "Le Jour où tout a basculé: Nos bébés ont été échangés" (The Day When Everything Changed: Our Babies Were Switched at Birth), a family is in turmoil. Frédéric is very jealous of his wife Anne-Sophie and accuses her of having an affair with an old flame. Although all the evidence seems plausible, is there another explanation?

Anne-Sophie and Frédéric are at loggerheads and won't speak to each other due to the unexpected results of a paternity test. Anne-Sophie receives some news at the end of the video that suggests the situation will become even more complicated.

Anne-Sophie meets with Fred to tell him the bombshell news about the paternity test results. Will this bring him back home?