A single dad meets his adopted daughter for the first time. Then he agrees to meet her birth-mother.When their two worlds collide, will what they have in common outweigh their differences? A one-off meeting. But three lives will be changed forever. One the One Hand, We're Happy is a tender, funny, hopeful play about being a mum when your name is Dad.This edition published to coincide with the run at the Edinburgh Festival Fringe in July 2019.