Jack and his wife - who is very pregnant with triplets - have just moved into their new home in Pittsburgh. Successful and handsome television actor Kevin is growing increasingly bored with his bachelor lifestyle. Randall - who was abandoned at a fire station by his father as an infant - is a stylish New York-based businessman working to raise two daughters with his wife, Beth. These people are among a group, several of whom share a birthday, of seemingly random individuals whose lives intertwine in unexpected ways.