Detroit centres on Kara, an android that discovers she can feel emotions and appear sentient. The character of Kara was based off a 2012 PS3 tech demo KARA, which shows an android gaining sentience. On the official PlayStation Blog, David Cage, CEO of Quantic Dream explained why he took the 2012 tech demo and made it into a fully-fledged game, “Many people were deeply moved by this character and felt empathy for this character who just wanted to live. But everyone had the same question: what happens to Kara when she leaves the factory?”
From the above trailer and David Cage’s PlayStation Blog article, we can see that the game is based around how humans would react when confronted with a new form of intelligence.