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.
as Morgane Ledantec
as Jérémy Laubie
as Commandante El Fassi
as Romuald
as Lola
as Légiste Sophie Delbarre
as Major Thibaut
as Nolwen Legendre
as Jean Legendre
as Loan Legendre
as Denis Legrand
