The exciting new time-travel adventure, Future Proof, continues as agents James Rison and Simon Magus embark on their next mission and try to stop the United States military's infamous Philadelphia Experiment during World War II. They board the U.S.S. Eldridge, where they encounter Nazi scientist Dr. Strughold and his Die Glocke machine. Can James and Simon stop Strughold before he initiates his evil plan to sabotage American history?