First season gets the five stars... as for the second season.... I prefer to not acknowledge it's existence.
First off I have to say that the show ended way to early. There are so many questions unanswered. It drove me crazy. There are books about the show. So I bought the last one, because that one takes place after season 2. And gave me some answers.
It is about Max (played by the beautifull and young Jessica Alba) who escaped as a kid (with a group of other kids) from a facility who genetically engineered kids in to super soldiers. Now as a young woman she tries to find answers and the other refugees. And she has to maintain a normal life to not stand out and get captured again.