They're gonna find the Emerald City on the Other Side of the island, and the Wizard will show them that they already possess what they desire, then bugger off when a missile launches from under the island and he rides it a la Dr Strangelove, up, up, and over the previously jumped shark. Then Glinda the Good Witch will pass out the Dharma Ruby Slippers, which they will all click three times while chanting 'There's no place like home' and one by one they'll disappear from the beach, leaving only their footprints in the sand which will remain until the small purple-furred hermit crab scuttles in and the the tide comes in to wash everything away.

Auntie Em, Auntie Em...