Hot Mikado takes the classic Gilbert and Sullivan tale and updates it to 1940s-style. Young Nanki-Poo, the Mikado’s son masquerading as a Second Trumpet player, arrives in the town of Titipu looking for the beautiful Yum-Yum. After bribing various officials he learns that she is still going to be marrying a former tailor turned Lord High executioner, Koko. Meanwhile, the Mikado demands that Ko-Ko execute one person within the next month. Nanki-Poo agrees to be executed as long as he can spend a month as Yum-Yum’s husband. However, the plan goes awry when the Mikado makes a surprise visit to Titipu and brings with him Katisha, an older woman who is pursuing Nanki Pooh. Luckily, Nanki-Poo is not excuted because he is the Mikado’s long lost son. Further, Ko-Ko and Katisha fall in love so Nanki-Poo and Yum-Yum can stay married.