Another science fiction which is filled with drama about relationship between the characters. The main character gets stuck in an alternate reality. Rest of the drama in about what mistakes he made in this reality, how that shaped the universe, finding all his friends from the other reality and catching up with them etc. The series has a lot of potential but opportunity has been missed. Like in every thriller, there is also an assassin walking around killing every person the main character tells his story too without telling is why. Overall, apart from the main "shell" where the characters have interchanged their realities, it is all about their survival.