In this episode, 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.
Wesley Crusher (Wil Wheaton) receives word that he has been accepted to Starfleet Academy and, for his final mission, he will accompany Picard on his shuttle trip to Pentarus V. A distress call comes in from Gamilon V, where an unidentified vessel has entered orbit and is giving off lethal doses of radiation.
Picard orders Riker to take the Enterprise to resolve that situation while he and Wesley travel in a shuttle sent by the miners, commanded by Captain Dirgo.
Meanwhile, the Enterprise has arrived at Gamilon V, finding the unidentified ship is an abandoned 300 year old garbage scow filled with radioactive waste.
Meanwhile, on the Enterprise, despite the rising radiation levels on board, which are nearing lethal, Riker manages to get the barge headed into the sun and speeds off to help in the search for the shuttle.
"Final Mission" was released in the United States on September 3, 2002, as part of the Star Trek: The Next Generation season four DVD box set.