A Blackpool coach driver and a tour guide get caught up in a deadly comedic conspiracy when a train's passengers begin mysteriously dying one by one.

Terry (Johnny Vegas) and Gemma (Sian Gibson) of Draper's Tours return with this murder-mystery spoof as they are joined by Mildred (Sheila Reid), Coleen (Sue Johnston) and Hilda (Georgie Glen) on the ferry of a lifetime.After a grand welcome with the crew, terror ensues. A murderer dressed in a dolphin costume wreaks havoc on the ship as passengers get slowly picked off. Coleen is battered with Secretions - a perfume brand available on board the ship, Tracy (Taj Atwal) is shot with a crossbow and the ship's engineer is stabbed with a wrench, after they try to warn passengers.The crew and Terry then search the ship in hopes of finding the murderer while the pressure inside the boat slowly rises as a flood is about to commence. Emily (Doon Mackichan) continues her affair with Alan (Don Gilet) before he is brutally beaten to death with a Choco Mound bar. The remaining passengers gather while the pressure reaches dangerous levels. Pipes begin to burst and the ship's power is cut off. ...

Following the hugely successful Agatha Christie-inspired whodunnits Murder on the Blackpool Express and Death on the Tyne, unlikely super-sleuths Johnny Vegas and Sian Gibson return with a killer group of comedy greats in the latest Draper’s Tours outing, once again written by Jason Cook. Terry (Vegas) and Gemma (Gibson) are forced to take refuge in a sinister and dilapidated caravan park after their coach breaks down. During the unplanned stay, visitors and residents begin to be bumped off one by one under grizzly circumstances. The all-star cast includes Sally Lindsay, Phil Davis, Mike Wozniak, Joanna Page, Jason Donovan and Annette Crosbie.