In Sullivan & Son, Byrne plays Steve Sullivan, a successful corporate attorney from New York who brings his girlfriend, Ashley (guest star Brooke Lyons – 2 Broke Girls), home to meet his parents. Steve's timing is impeccable, however, since his Irish-American father, Jack Sullivan (Dan Lauria – The Wonder Years), and Korean mother, Ok Cha (Jodi Long – Beginners), are preparing to sell the family business, a bar known as Sullivan & Son.