Sean (Jack) and Mark are confused and only one thing will help. ((really bad at descriptions but septicplier))

I'm pretty sure you know this scenario: it's Halloween. Everyone becomes what they're dressed as... But I bet you've never heard this--me and Shelby were Tré Cool and Billie Joe Armstrong for Halloween. Since Tré and Billie were dressed up as well, they're something completely different--and they had a concert this Halloween! Well, it's a good thing that they found us... And that Mike is still himself... Otherwise, we'd be screwed!