Subplot Kudzu

I'm doing a Discworld campaign in my next cycle. The premise is that King Verence has learned about the Ankh-Morpork Night Watch and thinks that as a modern, progressive Kingdom, Lancre should have one too—and assigns Shawn Ogg to set one up. Shawn promptly acquires and reads a popular novel about the heroic adventures of Captain Ironfoundersson of the Night Watch, and sets out to imitate the model.