In a special episode: Jesse's grandfather Iorgos "Papouli" Katsopolis is back from Greece for another visit. The family finds it pleasant to have Papouli around. One morning during Papouli's visit, everyone goes to wake him up after Michelle has gone to school -- only to discover that Papouli has died in his sleep. His death was caused by heart failure. When Michelle arrives home from school later that day, Danny tells her that Papouli has died. Michelle is devastated, and it turns out that only one person can comfort Michelle, and that person is Jesse, who is taking it just as hard. Kimmy and D.J. argue over a pair of sunglasses, but Papouli's death helps them realize that friendship is too important for them to argue over a pair of sunglasses.