You are witnessing in the Death Star with C3-PO Princess Leia give a message using R2-D2 to an unknown person.

C3-PO: "R2, you better hurry up. Why do you think we have a good amount of time for this? We have plans to steal."

Leia: "No need, 3PO. He's trying to help."

After that, you go off with C3-PO, Leia, and R2-D2 to get the plans. But, that's when..

C3-PO: "It's gonna crash! R2, get over here!"

C3-PO, R2-D2, and You crash into a sandy planet, being Tatoonie.

After walking, you finally meet human faces.

C3-PO: "R2! It's our second human face!"

You arrive to the stranger.

Luke: "Hi! Name's Luke. Luke Skywalker. I must say, I never met you guys!"

Then..

Luke's Aunt: "Luke! Don't forget to bring food to us when you're done!"