At twenty-two, college student Jack boards the Rocky Mountain Express 417 train, only to fall victim to an armed criminal hijacking. He unexpectedly unlocks a system ability called “Future Simulation”, granting him a limited number of chances to preview deadly possible futures. Repeatedly witnessing mass slaughter and the deaths of allies inside simulations, he records the identities, numbers and schemes of the gang. Once his simulation uses are exhausted, death becomes permanent. Forced to evolve from a timid student who only knew how to run, Jack teams up with railway police officer Daniel and emergency room nurse Emily inside the sealed train and tunnels. While evading the ruthless criminal group led by Vincent, Lina and Derek, he shields ordinary passengers, locates the hunted key figure Ethan, and fights for the hardware token controlling two hundred million dollar dirty money. Drawing on intelligence gathered from past simulated deaths, Jack out maneuvers the gang in irreversible reality, prevents the criminals from recovering the huge funds and delays their escape. He finally holds on until police forces seal the station at the next stop, and all surviving passengers get rescued.
