As Martin experiences a sexual awakening after watching female tennis players and cartoon princesses on television, Uncle Danny, his father Liam's brother and an ultra-cool musician, comes to visit. Danny is a man of the world and Martin turns to him for information on the birds and the bees, much to the annoyance of Liam - and Sean, who, seeing himself as redundant, hangs out with 'Crunchie' Haystacks, another boy's imaginary friend.