You landed through a transporter in a very strange place. Walk to the right and enter the Fish & Chips shop. Talk to the Poopie. He can help you getting back if you can find four items he lost.
Leave the shop and take the path to the north, right of the shop. On the rock you can see four items. Take them all four: the KEY, the RADIO, the CIGARETTE and the BILL.
Go south via the path back to the shop. Give the items to the Poopie and you’ll get a CHIP in return. Leave the shop, go back to the left and use the chip on the transporter and you win…
Game source: A copy of the game was found here on the internet.