Garfield and Odie watch a movie about a villain named Silent Jack and mistakenly believe Jon, with recent tooth surgery, to be Silent Jack. In the end Garfield, Odie and Squeak find out they were attacking Jon, but the real Silent Jack robs them.

Nermal finds a cat called "Agent X" who claims to be a Secret Agent, but really a runaway cat. Garfield becomes jealous as Agent X tells everyone about his adventures, so Garfield tries to prove he is a house cat named "Fluffykins".

Jon finds his old Accordion but Garfield doesn't like him playing it nor the very sound of it. Garfield tries to get rid of it, but in the end, the Accordion breaks and Jon gets bagpipes instead.

Garfield is rejected from The Pet Show because he's too fat to enter, so Odie takes his place and competes against Nermal for lasagna.