Krista Ross, a beautiful young doctor find the cure for cancer and then is murdered before she can tell the world. During the backstep, Parker discovers the murderer is a backstepper from the future. He has been sent back to kill the doctor because her cure for cancer also unleashes a worldwide plague. Parker who has fallen in love with the doctor convinces the backstepper to let him be the one to kill her. Instead Parker goes on the run with Krista trying to convince her to give up her research.
