With Victor’s mother, Hélène’s return, Julie begins to feel out of place with the horde. Camille grows close to Virgil, another “Returnee,” as Adèle gets to know her baby. Léna reunites with Serge, who is joined by a dangerous new “Returnee.”
Berg joins forces with Camille’s father, Jérôme, to take the investigation further. Serge leads Léna to the Domaine, the horde’s hiding place for a surprise reunion. Mystery surrounds Adèle’s baby—attracting the police’s attention.
Jérôme and Berg take in Audrey, an escapee from the Domaine, and try to locate her mother, Sandrine. Simon fears for his baby’s safety from the undead as Victor decides to leave the Domaine to look for Julie.
Sandrine makes a questionable decision about Audrey as Adèle and Simon grow closer. Julie learns a heavy secret from Victor’s father as Berg and Jérôme uncover the horde’s location and plan their attack.