Aaron's Beautifly, which he abandoned as a child, rejoins his team.
Aaron reveals he is going to battle Cynthia for the title of Sinnoh League Champion.
Ash and his friends meet Aaron, a member of the Sinnoh Elite Four.
The dub title is a reference to the 1972 Paul Simon song "Mother and Child Reunion."
This episode marks the first time Brock's Croagunk is seen coming out of its Poké Ball before hitting him with Poison Jab.