Kuato: What do you want, Mr. Quaid?
Douglas Quaid: The same as you, to remember.
Kuato: But why?
Douglas Quaid: To be myself again.
Kuato: You are what you do. A man is defined by his actions, not his memory.
Set in the year 2084, a man goes to Mars via a memory implant and discovers the truth about himself. An unexpected and harrowing series of events forces him to go to the planet for real, or does he?