Describe Killer7 here? Where do we start? In an alternate timeline, a worldwide ban on nuclear research -- and the firing of all nuclear missiles into each other high in orbit -- allows mankind to finally achieve world peace several years into the 21st century. To stop Kun Lan and the Heaven's Smiles, the elderly, wheelchair-bound Harman Smith -- a man who bears a grudge against, and shares some history with, Kun Lan -- utilizes "Killer7", a group of specialized assassins trained to deal with high-level threats to the security of the United States.