"Terminator 4" is set after "Judgment Day" (July 25, 2004). The main character, Marcus Wright, was a death-row inmate in 2003 who signed a consent form before his execution to have his body used for scientific research. He awakens in 2018 and eventually finds his way to Connor's base, where he discovers that he has been transformed into a hybrid of human and machine (a Terminator). Connor doesn't trust him, but only he can help Connor infiltrate the Skynet core to rescue Connor's father, Kyle Reese - if Kyle dies, Connor won't be born. Marcus and Connor strike a deal and enter the Skynet core one after another. Inside, Marcus uncovers that the so-called scientific research was actually a trap; Skynet had long planned to modify humans to infiltrate the human resistance organization. Marcus' role was to bring Connor and Kyle to Skynet so they could be killed. Realizing this, Marcus insists that he is human, not a machine, and helps Connor rescue the captured humans, together defeating a T-800. In the end, Marcus even gives his heart to a severely injured Connor.