Carlos donates a pool table to the convent. Sister Bertrille thinks it would be a good pastime for convent orphan Armando to partake as his current diversions are wild flights of fancy. Initially reluctant to learn, Armando takes to the game once he witnesses the amazing abilities of Emilio Gomez, who ends up being his teacher. Armando's a natural, however this new diversion, as was his old diversions, takes over his life to the expense of his school work. The Reverend Mother orders the pool table gone. Sister Bertrille figures that taking the pool table away will only make Armando more in love with the game, so she reckons what Armando needs is to be shown up. They find the best pool player in San Tanco to take on Armando, that being Carlos. Armando is confident he can beat Carlos and he does start off well, but after Armando scratches, Carlos cleans the table. To put more pressure on Armando, Sister Bertrille orders a rematch and feigns betting big money on Armando to the tune of ...