Squidward: (sighs) I was having such a nice practice session...

Mysterious Figure: (whispers) A cure? I think I have something better. Something that'll make these little sea creatures wish they'd never swum into our world...

SpongeBob: Squidward! The town's been overrun!

[Panel 2: Rick Grimes (from The Walking Dead) appears at the treedome's entrance.]

[Panel 3: A cliffhanger with a walker in the background, wearing a Krabby Patty hat.]

[Panel 1: Inside Sandy's treedome, with Sandy working on some scientific equipment.]

SpongeBob: It's... zombies!