Lisa and Bart investigate Krusty's suspicious new "Krustaceans" candy. Meanwhile, Homer wants a promotion at the nuclear plant and asks Marge to help him dress the part, and news anchor Kent Brockman struggles to find his feet in the changing media world. Blackboard: 'The first episode of the second 600'.

When the Retirement Castle and the V.A. Hospital can't solve Grampa's health issues, the Simpsons decide to take a family trip to Cuba to get him cheap medical care. Blackboard: 'Being right sucks'.