When I was playing the beta at the beginning of this year, I was clustered to my screen for many hours. I was happy to hear we could review the game but disappointed that we would only get a 2-week trial. But since I wanted to check it out again, I was satisfied with this "arrangement".

There isn't a real storyline in City of Heroes; superheroes need to vanquish evil from the city. The city this time being Paragon City, and the superheroes are all played by real people, something you can expect from a MMORPG.
The bad-guys are all AI-controlled, if you hoped to be bad, I have to disappoint you and you'll have to wait for the expansion City of Villains.