World renowned neurosurgeon Jon Ritter is on the verge of a medical breakthrough that will change the world. His ground-breaking surgical treatment, using transplanted non-human stem cells, is set to eradicate the scourge of Alzheimer's disease and give hope to millions. But when the procedure is slated for testing, it all comes to an abrupt and terrifying halt. Ritter's colleague is gunned down and Ritter himself is threatened by a radical anti-abortion group that not only claims responsibility, but promises more of the same. Faced with a dangerous reality but determined to succeed, Ritter turns to a long-time colleague to conduct a clandestine clinical trial in Seoul, Korea. But after successful trials, Ritter and his allies are thrown into a horrifying nightmare scenario: the trial patients have been murdered and Ritter is the number one suspect. Aided by his beautiful lab assistant, Yeonhee, Ritter flees the country, and is now the target of an international manhunt involving Interpol, the FBI, zealous fanatics, and a coldly efficient assassin named Fiest.
