By the end of Season 1, the five super-antiheroes settle their personal differences and form a bond close enough to be confused with friendship, forged through fighting against others who use their new found powers for their own dark ends.
Season 2 picks up more or less straight after Season 1, and each episode introduces a "super mystery benefactor called Super Hoodie, and how each character manages to overcome the limitations of their powers. The identity of Super Hoodie is revealed with a 'Bwah?!' moment that is both awesome and unexpected.
The characters are very well developed, and you can see their progression as the series goes on. Particularly with regards to Alisha and Simon, their changing relationships with people and their overcoming of their personal demons is well presented. Nathan, Curtis and Kelly remain pretty much the same as they were in Season 1, with the exception of one episode a piece that gives them some revelation (which they promptly seem to forget and go back to their old selves). The main strength of Misfits is that all of the characters are flawed. There is no real sense of good and evil, nor of justice. The main characters need to survive with each other as well as against the rest of the world, and so there is no time for morality.
There is one plot hole at the finale (but, since it involves time travel, it can be forgiven - just), but aside from that, season 2 of Misfits surpasses the first and goes from strength to strength. I can't recommend it highly enough for UK viewers, or those familiar with British culture and television. Everyone else, well, give it a shot and you might be pleasantly surprised. Season 2 is available to purchase on DVD now [UK Only].