Morgane Alvaro, three children, soon to be four, two different fathers... Oh no, three! Morgane's life just never ceases to surprise us. After causing chaos in the lives of those around her in previous seasons, Morgane is about to face a huge backlash. Has her karma decided to present her with the bill? To start with, she discovers she's pregnant, but has absolutely no idea whether it's Timothée's, David's, or Karadec's child. She remembers sleeping with Karadec, but does he remember it himself? It's difficult to break the ice with her partner, who deeply resents her for breaking his trust when he had opened up to her so intensely. How will Morgane announce to Karadec that she might be pregnant with his child? But maybe not just his? On the investigation front, a locked-room murder, a haunted house, a mischievous computer whiz kid, a mysterious serial killer – all will challenge the exceptional intelligence of a hyperactive Morgane fueled by hormones. And never mind karma.

Morgane's efforts to improve her karma have finally paid off: Karadec turned out to be the father of her baby as she had hoped, and while she lost her home, he graciously agreed to take her in. For once, the universe seems to have good things in store for our heroine as this new season begins... But now that Morgane has gotten what she wanted, the question remains: can she make things last? Because while Morgane is gifted with chaos, insecurity, and adversity... She is much less so with happiness and simplicity. And just then... No sooner have Morgane and Karadec begun to find a balance in their new life as parents than it finds itself threatened by an irresistible attraction between them! But trying a romance when you're already co-parents, colleagues, and roommates... is it a genius idea? Or a great way to screw everything up? Final season of HPI.