Trap - Andrew Fukuda

nAfter barely escaping the Mission alive, Gene and Sissy face an impossible task: staying alive long enough to stop an entire world bent on their destruction. Bound on a train heading into the unknown with the surviving mission girls, Gene, Sissy, David, and Epap must stick together and use everything they have to protect each other and their only hope: the cure that will turn the blood-thirsty creatures around them into humans again.