Three months after the release, the chances are very good that you know how you feel about Destiny and how you will likely feel about The Dark Below. If the problems that have left many a player crestfallen, even angry, in the weeks and months since the game hit haven't affected your need to keep at the constant grindstone week after week, then The Dark Below at least gives your daily runthrough a nice kick in the pants for a few days.
The scenario is that new non-player character Eris Morn is one of six warriors sent to go kill big baddie Crota (whose sword you wield during one of the early missions on The Moon in the campaign). She is the only one who survived, and she is now enlisting the help of Guardians to help finish what she started. Eris as a persistent storyteller is a good one, a better one than your previous companion (known affectionately as Dinklebot) at least, and her desperation and post-traumatic stress disorder lurk behind every word. Of course, that story is in one ear and out the other, as it is with most of Destiny's campaign content. You get an initial mission in the Cosmodrome as an appetizer, and it's there to introduce the new screaming female wizard baddie, Omnigul, and a new debuff called Weight of Darkness that comes into play when you start the raid called Crota's End.