Morgane Ledantec
Jérémy Laubie
Commandante El Fassi
Romuald
Lola
Légiste Sophie Delbarre
Major Thibaut
Nolwen Legendre
Jean Legendre
Loan Legendre
Denis Legrand
Captain Jérémy Laubier investigates a young surfer's murder in La Torche, Breton, discovering a course on Ys myth. Professor Morgane Le Dantec identifies the victim's sister.