The objective of the game is easy since you just need to deliver the rocks from one end to another end. At the start of the game, you need to wait for the rocks to be loaded into your truck. There will be no problem here as you just need to wait until all the rocks are fully loaded.
After that, you need to be on your way and deliver the rocks on time to the pickup point. Now, as easy as it might sound, the truth is that it is not and some of the rocks will fall out of your truck since the road ahead is all mountains.