Jerry's Nana calls him to open up a bottle of ketchup. When Jerry goes to her apartment, Uncle Leo is also there. Nana reminds Leo to give $50 to Jerry's mother, Helen.
Nana, who has been confusing past and present, is referring to an incident from Leo and Helen's childhood.
Jerry asks his father, Morty, if Leo ever gave Helen the $50. An angry Morty calculates what the interest would be on $50 after 50 years, but Leo refuses to pay, saying they have no proof Nana's story is true.
Leo puts Nana in a nursing home (where this nurse works), presumably to stop her from talking about the $50. While visiting Nana at the home, he learns her old friend Buddy is also there. Buddy confirms the exact details of Nana's story, and Jerry declares Leo busted.
* Wild Hearts
