HBO has debuted a trailer for Family Tree, a new comedy series created by Christopher Guest (Best In Show) and Jim Piddock. Chris O'Dowd stars as Tom Chadwick, a man who begins exploring his heritage after inheriting a box of items from an aunt he never knew existed. He goes on a journey from England to California to find out where he really comes from. Take a look at the first footage from this anticipated series, which also stars Ed Begley Jr., Michael McKean, and Tom Bennett.

The series will debut sometime in May, although HBO hasn't announced a specific release date.