The Dumbest Bet in History!

The Dumbest Bet in History! (史上サイテーの賭け) is the 21st episode of the fourth season of Ranma ½, Outta Control, and is the 85th overall episode.

Relation to the Previous Episode
The incident with the Gambling King in the past occurred just prior to Genma stealing Ukyo's okonomiyaki cart and leaving her behind, as depicted in Ranma Gains Yet Another Suitor.

Plot Overview
Because of a gambling debt Ranma made ten years ago in a game of Old Maid, the gambling king occupies the Tendo dojo. But Ranma, who, like the gambling king, is a bad gambler himself, manages to win back the dojo through the same game by the act of cheating.