Caël (amusingly his character has the same name) was the son of a rich, widely-hated, cutthroat industrialist in Béthanie named Ronan. (Incidentally played by Caël’s real-life father too!) Ronan was a single father to his only son Caël, a college student. Ronan and Caël were polar opposites: Ronan was ruthless, heartless, and greedy; Caël was polite, kind, and generous. With Ronan being an absentee father and Caël loathing his father’s behaviour, their relationship was distant and perfunctory.
After volunteering at an orphanage’s charity event, Caël gets kidnapped by a group of left-wing Picardists. (Hence the screengrab.) They demanded a ransom from Ronan, which Ronan reluctantly pays. The kidnappers then had a second demand: that Ronan show himself to the group, apologise for his mistreatment of workers, and stay in captivity for one month in exchange for Caël. Ronan thought it was too much and pressured the police to act. Not satisfied with Ronan’s response, the kidnappers shot Caël and buried his body in a grave in the forest. The kidnappers pretended that Caël was still alive. The police, unaware that Caël was dead, were still trying to look for him.
The episode then cuts to Lancou, who was watching the news on TV about Caël’s kidnapping when he was interrupted by a distraught Azaëlle. Azaëlle was one of Lancou’s immortal employees; she was a fallen angel who had recently been thrown out of heaven and stripped of most of her angel powers. Azaëlle was disgraced because she had used her angel powers to ‘excessively influence’ and ‘inappropriately meddle’ in the mortal human world. Finding herself on earth, Azaëlle sought refuge with Lancou and his merry band of
psychopomps ten years ago.
When Lancou asked Azaëlle why she was upset, Azaëlle revealed her past to Lancou. Azaëlle used to work as a
guardian angel, and one of her wards was Caël. Caël was the main reason why Azaëlle lost her powers – she had been excessively protecting Caël and had been his mother figure while he growing up. This explained Caël’s massively different personality from Ronan’s. Caël’s mother died when he was a baby. Caël’s mother went to heaven and met Azaëlle. Azaëlle promised that she would look after Caël. Now Caël was dead and his soul was nowhere to be found.
Azaëlle was on ‘human duties’ (working as a trucker in Lancou’s mortal, on-earth business) at the time that Caël died. She only learned that Caël had died when Titou, the guy on ‘immortal duties’ (ferrying souls to heaven or hell) told her that he had ferried Caël’s soul to heaven but was rejected by Saint Peter because Caël’s name was not on “The Book”. Hell did not accept Caël either: Satan wanted Ronan, not Caël. Caël returned to earth as a lost, wandering spirit. Azaëlle wanted Lancou to help her former ward and bring justice to him. First, they must find Caël’s soul.
Lancou, Azaëlle, and Titou went to the place where Titou fetched Caël’s soul – the grave in the forest. Lancou devised a way to get the police and Morvan’s crime scene investigators to easily find Caël’s grave by leaving clues leading to the place.
Afterwards, the three psychopomps searched for Caël’s wandering soul. They found Caël, sad and crying, inside the home of his girlfriend, Eryl. Eryl, too had been crying and worried about Caël, but they could not communicate, separated by the dimensions of the living and the dead.
Titou assumed his immortal form and appeared to Caël, coaxing him to come outside to the other psychopomps. Caël recognised Azaëlle (his “imaginary friend” from childhood) and had a brief happy reunion moment. Caël asked why Azaëlle was gone for a long time. Azaëlle dodged the question and instead nudged Caël to give Lancou information about his death. Lancou would then feed the information to Tifenn Morvan so his murder could be solved.
The story arc is two episodes long, and S5E11 ends here.