Roy gets the surprise of his life when he agrees to let his star athlete son take cello lessons from Helen.

It's Roy's 12th birthday (he was born on a leap year), and Helen contacts Roy's son R.J. and convinces him to come back to Nantucket for the party. But the initial reconciliation is dashed when R.J. brings his significant other to the party.

Meanwhile, Brian helps Antonio out by driving the cab while Antonio waits for his driver's license.