Emma, a talented conductor and rising star on the Montreal scene, has a complicated relationship with her father and agent Patrick. She has to face up to her emotions and decide whether she wants to successfully combine her career with her love affair with Naëlle, a recently separated cellist and mother of a young son.

A pair of rival butterflies form an unlikely friendship.

Diane Messier lives on a farm in the Eastern Townships, near the American border, with her daughter Sarah and her two sisters, Carmen and Julie. Following a tragic accident, Diane feels constantly threatened and even believes her house is haunted. Worried by her daughter's actions, Angèle returns from Florida to bring comfort to Diane and try to reunite the family clan.

To commemorate the passing of their beloved father, four brothers very much at odds congregate for one final week at their summer house in the Magdalen Islands. As they bid their final goodbyes, the four brothers revisit their past joys and hardships as each one of them struggles to give meaning to their very different lives.

Back in the 1970s, we see a young Louise who is crazy in love with Vincent, a rebellious activist. Along the way, Louise will have to give up some of her political ideals and make some difficult sacrifices. Today, Louise has become a formidable businesswoman at the head of Nocturne, her perfume empire that owes much of its success to her top-selling perfume Nuit Blanche. Everything changes when, at an evening reception celebrating her success, Louise dies alone in her garden. Is it murder or an accident?