Stylax buys Grumio an erotic vase for his birthday featuring a character who bears a striking resemblance to someone nearby. Marcus, under pressure from the girls, suggests they swap roles for the day. Meanwhile, Stylax hangs out with his cousin Lucretia, with whom he has an unusually close relationship.
There's a heatwave in Rome and Marcus has invested in an exciting new gimmick for the bar - ice. Grumio develops an innovation of his own in the form of a hat-parasol hybrid, which attracts the attention of wealthy entrepreneur Severus. Jason and Aurelius both join male escort agency the Knights of Eros.
Jason's brother Darius is getting married and Marcus desperately wants to hire out the Crown and Toga for the occasion, while Grumio offers his services as wedding planner. But their plans are threatened when they find out that Darius is a serial jilter. Elsewhere, Marcus clashes with their lazy postman.