When a cancer patient who's undergoing a new treatment leaves the hospital and dies, it is believed that she succumbed to the cancer. But when some people whom she went into contact with also die, it is believed that the treatment mutated into a virulent disease. So the doctor who's the one created the treatment is told by his boss, his work is over. So he goes to work for a pharmaceutical company who's only interest is in making money. And when another person becomes ill, Quincy implores the doctor to try and develop a cure.
Michael Morishima, a good friend of Sam's, is murdered in the Little Tokyo section of Los Angeles. It turns out that he was investigating possible Yakuza activity in Los Angeles. Unfortunately, Michael's old fashioned father now wants revenge. Now Sam and Quince must find the old man before he becomes a victim himself.