Science. Bad. Scientists. Worse. The Manhattan Project was the secret project to build the atom bomb. The Manhattan Projects were all the other projects hidden behind the atom bomb project to build weapons and space travel and fight secret wars with other bad scientists. It's all bonkers and full of terrible things and horrible people - Oppenheimer is really his evil psychotic twin who killed and ate the other Oppenheimer and has fractured into multiplying multiple personalities. The volume opens with an attack by Japanese Death Buddhists and Kamikaze Killing Machines and ends with the genocide of an alien species, so I guess it could go anywhere and everywhere from here doing terrible things as it goes. Just don't say you weren't warned.