 Sister Bertrille is getting better at flying and takes the occasional practice flight. During one of her flights, she is seen by Carlos Ramirez, who thinks he has seen a religious vision. Because of it, he gives up drinking, gambling and girls, while taking up meditating and going to mass. Carlos  current girlfriend, Dottie, is concerned and goes to Sister Bertrille for help, telling her the story. Although Sister Bertrille is as happy as any of the sisters to see agnostic Carlos going to church, she doesn t want him going on false pretenses, and tells and shows him the truth about her ability to fly. Relieved, he goes back to his old carousing ways and tries to make up for lost time. In a poker match, he loses everything except his yacht. Lou and Tony, his gambling buddies, say that they will let Carlos bet them in any way: the yacht against his losings that night. He goes for what he considers a sure thing: that they will see Sister Bertrille fly unaided. Unbeknowst to Carlos, the Reverend Mother has forbid Sister Bertrille from flying while Bishop Dillon is in town. Carlos tries to convince Sister Bertrille to do this for him, he saying that in a way she is responsible for his predicament. He even threatens to take back the property he donated to the convent, as he has not yet signed the papers. Sister Bertrille goes to Reverend Mother for guidance on this issue. Without hearing the specific issue, the busy Reverend Mother tells her to use her own judgment and do what s best for the convent. So Sister Bertrille flies, just as the Reverend Mother and Bishop Dillon go to visit Carlos at his yacht, Carlos the man who so generously donated the land to the convent. A convenient shove of the Bishop into the water saves Sister Bertrille s secret from the Bishop.