The Enterprise's computer has fallen prey to a mysterious electronic `virus' which has programmed it to self-destruct.
Craig is jealous when Mitch reconnects with an old flame. Eddie buys an old Mustang at a discount but soon realises what has happened when he gets arrested for driving a stolen car.
Jesse takes drastic measures when he feels too dumb to attend a cultural arts party with Rebecca (Lori Loughlin).
Jake and Amanda investigate Jess while Kimberly conspires against Michael using Amanda as part of her plan; Brooke manoeuvres Billy into proposing.