- Outside, people are enjoying the Don's daughter's wedding. The guests dance and laugh at the tables, as FBI agents show up and start photographing license plates.
- Vito Corleone greets another rival Don, Don Barzini.
- Sonny, the Godfather's eldest son, tells the FBI agents who are writing down license plate numbers to scram, and smashes a photographer's camera.
- Vito Corleone handles another favor, one to help a baker stay in the US, and Michael, the Don's son, arrives at the wedding with his girlfriend, Kay. Tom Hagen greets them, and Michael explains that Tom is his adopted brother and a lawyer and adviser to the Godfather.
- The Don meets with his henchman, Luca Brasi, in his office, and the guests have fun outside, while Sonny sneaks away to commit adultery.
- Johnny Fontane, a Frank Sinatra-style singer and the Godfather's godson, arrives at the party and makes the guests freak out (in a positive way).
- Michael tells Kay about how the Godfather helped Johnny out. His henchman, Luca Brasi, held a gun to a bandleader's head and forced him to release Johnny from a contract. Kay is shocked, but Michael claims that this represents his family, not him.
- Johnny goes to talk to the Godfather in private. He complains that a producer won't give him a role, leading the Godfather to slap him and tell him to act like a man. But he agrees to help, too.
- Tom Hagen and the Don discuss the looming problem they're going to need to deal with: the drug-dealer Sollozzo and his business offer.