The event is taking place to mark the university centenary celebrations and comes at a perfect time for Heston (Owen Brenman) as he's bored and in a slump after his success in The Mikado.
Jack (Nicolas Woodman) isn't interested at first but becomes intrigued and agrees to get involved when he hears that Heston would be playing opposing counsel in the re-enactment. Who will come out on top?
Also next week, Heston puts Mrs Tembe (Lorna Laidlaw) in charge of health and safety, which has mutinous consequences when Zara, Jimmi and Elaine all complain about her.
Elsewhere, Julia (Diane Keen) continues to worry about the state of her son's marriage.
For the full story on upcoming Doctors episodes, head over to our spoiler section. Here, though, Soap Scoop takes an in-pictures look at next week's plots.