The thespian Lamy sisters, Alexandra and Audrey, and Alexandra’s daughter Chloé Jouannet, have a field day in the utterly zany fairground slasher comedy mini-series, Killer Coaster. It all begins when a body is found in the Palavas–les–Flots fair Ghost Train. The year is 1998 and, unbeknownst to her superiors, overly zealous meter maid Sandrine Laplace decides to launch a one-woman investigation into the fun house tragedy. Going undercover among the carnies, Sandrine quickly becomes embroiled in fairground intrigues and warring families, as corpses multiply and she finds herself a little too alone to face a killer on the loose.