When Mitchell gets a bit part in a gangster film, it goes to his head. Swayed by the hype, Hoburn instructs him and Stephen to swap jobs - but with the school drama competition looming, Class K aren't keen on the changes.

The recovery of Stephen and Mitchell's old time capsule prompts an overnight break-in and some ghostly encounters and revelations for Class K. Hoburn is desperate to keep the identity of the new art teacher a secret.