Turning six is a HUGE deal in the Humphrey House and David has been waiting two whole years for his twin brothers, Daniel and Dylan, to celebrate their sixth birthday. Well, the time has finally come and David is ready to reveal his secret and find out if the twins will get a very special birthday gift like he did two years ago. Hang with the Humphrey Boys, (David, Daniel, Dylan, and Dominic), as they spend a day laughing, having fun, and finding out major secrets about who they really are.