Bon Bon, the ultimate sourpuss of Ponyville, gets dragged by her best and only friend, Lyra Heartstrings, to the chintzy Fillydelphian Alternate History Museum on an obnoxious trip. Naturally she doesn't believe any of it, which makes it all the more annoying when the building itself sends them into another universe, a 'World of the Plastic Beach'. And that's not getting into the other people there.

Or "Stands".