Dan takes his Behavioural Unit on a historical school trip with desperate hopes of becoming a "bright light" his troubled kids can follow.

Cast: Greg Davies, Roisin Conaty, Mike Wozniak, Isy Suttie, Jeany Spark, Stella Gonet, Michael Gould, Ashley McGuire, Charlie Kemp, Elliot Levey, Roger Sloman, Gavin Spokes, Michael Bunani, Max Gill, Rhianna Hosmer