When the Hills learn that Msgr. Martinez is coming to Arlen, Peggy uses a "sick" Bobby to get him to be a guest for her Spanish class. After the class, he offers her a job in Mexico City as his children's SAT tutor. Hank is concerned about Peggy being alone with this sexy Latin man in Mexico City.
Despite Hank's protests Peggy decides to go and asks Luanne to fill her role in the family while she's gone. Once in Mexico, Peggy becomes convinced Eduardo (Msgr. Martinez) is trying to seduce her and she calls Nancy to discuss their "flirtation".
Back at home, Luanne is falling apart under the pressure of taking care of the family, while Hank grows increasingly frustrated with Luanne's homemaking skills and misses Peggy.
Meanwhile, Peggy's fantasies regarding Eduardo's intentions are fueled by constant misunderstandings in his home, and she begins to plan ways to let him down easy. Peggy is crushed, however, when Eduardo's wife who Peggy believed to be dead comes home and Eduardo tells Peggy he sees her as nothing but a frumpy, old lady who is tutoring his kid. She comes home chastened and is grateful for a not-too-suave Hank who plans something special to prove how much he loves her.