The year is 2046. Detective Ross Sylibus is transferred to Mars when a country singer on his flight is murdered. Making matters more complicated is that the singer is a "Third" - a robot that looks and feels like a human. Sylibus is partnered with Armitage - a beautiful female cop with a bad attitude. As they investigate the murder of the singer and other women on Mars, they uncover a conspiracy that can have them both killed by the Martian government, especially when Armitage is revealed to be a Third herself.