"Final Mission" is the 83rd episode of the science fiction television series Star Trek: The Next Generation, and the ninth episode of the fourth season.After learning that he finally has been accepted into Starfleet Academy, Wesley Crusher welcomes Picard's invitation to accompany him on an away mission that could resolve a mining dispute on an arid world. But following a shuttle crash and a near disastrous search for water that leaves the captain near death, Wesley finds himself charged with the weighty responsibility of keeping both himself and Picard alive until a rescue team can locate them.