Young Sister Bertrille uses her ability to become airborne to help others, whether they want it or not. Although her aims are always benevolent, her means are often bemoaned by Mother Superior. The other Sisters must cope with their beloved Sister's aerodynamics and antics as she flies in and out of trouble.
The convent baseball team has its first game on the weekend. Generous Carlos outfits the team so that it will at least look like it knows what it's doing; in other words, the convent team is the underdog in the game.
Local celebrity and television show host, Claudio the Clown, thinks that Sister Bertrille would be perfect person to have as a guest on his children's show.
San Tanco is getting a new parish priest, Father Walter Larson, an old friend of the Reverend Mother's. But Father Larson has spent most of his life as an archivist, and is used to being alone with his books, and is not a very social person.
The Reverend Mother hires Paola Guzman as her temporary secretary. Paola, full of Latin flair with a penchant to do the bossa nova, is a bit at odds with the staunch Reverend Mother's style, but Paola is admittedly an efficient secretary with a kind heart.
When Marcello describes the sisters' to others as "guys", they think that he needs a fatherly male influence in his life.
Carlos' wait staff, led by Enrique, is on strike against who they consider their tyrant boss.
Struggling writer and ex-newspaperman Joe Barnes/Roy Barnes thinks he's hit the jackpot when he sees Sister Bertrille fly. She will be his exclusive story. All he needs is some photographs of her in flight to accompany his story.
On a dark and stormy evening, Alonzo Baldazon's jalopy of a car breaks down outside the convent where he takes refuge.
In trying to get rid of a brass bed, Sisters Bertrille and Sixto trade it for a donkey named Hector.
The Mother General has issued an edict for the sisters to wear a new habit. The sisters are all thrilled by the new, modern habit, that is until one by one they all realize that the new cornette with which will no longer allow Sister Bertrille to fly.
When the Mother General Adelaide of Culebra wants the sisters to hold a fund-raiser, the sisters think the perfect event would be to run the silent film Lure of the West, the thought initiated after they discover that the Mother General is former silent film actress Gloria Davenport, the movie's star.
On a day outing with Marcello, Sister Bertrille breaks three different traffic regulations. She forces Officer Juarez to give her a ticket so show Marcello that even nuns have to obey the law or pay the price.
After Sister Bertrille is partly the cause for Carlos' latest mishap which places him in the hospital, Carlos and Sister Bertrille individually review their relationship.
Rickie Malinas is the sports writer for the San Tanco Tribune. But he's also temporarily Dear Aggie, the paper's advice columnist. He convinces Sister Bertrille to take over Dear Aggie duties until he can find a permanent replacement.
Sister Bertrille's sister, Dr. Jennifer Ethrington, is in San Tanco for some much needed rest and relaxation. She isn't aware that there is a medical convention in town, and as such, she takes the sisters up on their offer to stay at the convent to get away from the shop talk that would happen if she stayed at the hotel.
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.
As her lead gets ill, Sister Bertrille is looking for someone to portray Columbus in a reenactment of his landing on Puerto Rico. Carlos suggests his cousin, Luis, who is back in the casino kitchen causing Carlos grief since the dry goods store went bankrupt.
Mr. Sanders is an ex-student of the convent, now a success in his adult life. He has come back to the convent to adopt a child, namely what he calls the dumbest kid in school.
Felix Ragusa, an independent plumber, gets a major plumbing job at Carlos' casino, the job obtained through an introduction from Sister Bertrille. Because Felix has to run around to get supplies, he has to leave his sidekick, Tiger the dog, with someone.
Little does Sister Bertrille know, but she's sleep-flying. On one of her sleeping flights, she comes across Carlos with Sophia Novello, the daughter of a business associate Antonio Novello.
Kim Ching is Carlos' foster daughter visiting from Korea. Carlos is expecting Kim to be a young girl who still plays with teddy bears, but she ends up being a beautiful young woman who is looking for a husband.
After the convent washing machine breaks down, the sisters are forced to go to a laundromat. When Sister Bertrille goes in to do the convent laundry, little does she know that Harry Madison and Eddie, a commercial producer and cameraman, are shooting a candid camera commercial for Delight laundry detergent.
Pablo Cortina stops by the convent looking for work, and agrees to do handyman work in exchange for English lessons. To Carlos, Pablo looks a lot like El Charro, a famous bullfighter from Madrid.
Sister Bertrille gets into a fender bender, caused by her running a red light. She can't really remember what happened, and is willing to accept responsibility for the accident if it was her fault. The occupants of the other car are hippies, namely Tommy Boyce and Bobby Hart of the singing group, The Paper Balloon, who happen to be appearing at Carlos' casino.
To save a children's day camp in a park in San Tanco, Sister Bertrille and the nuns must attract more residents to the town.
Thomas Martinez, Carlos' uncle, is planning his own funeral to be held next week, this funeral despite him not being ill. He admits to Sister Bertrille that he has witnessed what he calls the Martinez Sign, that which generations of his male ancestors have seen and have passed away exactly seven days following.
