Jack and his wife - who is very pregnant with triplets -- have just moved into their new home in Pittsburg. 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.