For the occasion, Gloria's mother, Pilar (Elizabeth Peña), and sister, Sonia (Stephanie Beatriz), come to visit bringing with them their Colombian traditions.
Meanwhile, with Claire (Julie Bowen) running around for errands, Phil (Ty Burrell) is alone at home with the kids and their problems plus his own one — a billboard with his face blocked by balloons.
Mitchell (Jesse Tyler Ferguson) and Cameron (Eric Stonestreet), on the other hand, are trying to deal with Lily's (Aubrey Anderson-Emmons) bad habit of making sarcastic comments.
[1] Specifically, when Phil recites the vows of renunciation during the Christening, the scene is intercut with scenes of his son Luke carrying out various acts of retaliation, on Phil's orders, against the people who are causing problems for his family: knocking a block out from under a trailer parked on a driveway so that the trailer rolls over a lemon tree off which Haley had earlier knocked a branch; using a BB gun to shoot the balloons that are blocking Phil's billboard; releasing rats at the party of a girl who had stolen Alex's birthday party theme; and placing the head of a stuffed zebra in the bed of a boy who was making fun of Luke at school and who had a fear of zebras.
This interpolation parallels the climactic scene in The Godfather, where Michael Corleone recites vows of renunciation during his godson's christening, while his Mafia enemies – including the dons of the rest of New York's Five Families – are killed on his order.
The zebra head in the bed and the boy's response to it parallel an earlier scene in The Godfather where film studio president Jack Woltz has refused to do a favor for Vito Corleone by casting his godson Johnny Fontane, awakens to find the head of his prize racehorse in his bed and has a similar reaction.
The final scene has Claire commenting on how odd it was that all of the problems had cleared up, to which Phil, sitting in his office, responds, "don't ask me about my business", after which Luke closes the office door, just as the final scene of The Godfather had Michael respond when his wife Kay had asked about the murder of Michael's brother-in-law Carlo Rizzi.