Junkfood and candy are banned from the canteen on 'know what you eat' day. It's worse for the trio, as MI9 called for agent Jed Black, a frustrated drill sergeant, to get them in shape in hidden gym sessions. Skul posts Ivor Luvabitz as vendor, who offers free samples of a greasy, highly addictive Bavarian hot-dog sandwich. When the exhausted trio emerges next day, they find pupils, staff and even Frank obsessed with the 'Wurst', regardless of insane price-rises. Oscar tails Ivor to the factory while Gupta works out an antidote.
—KGF Vissers