-COMPLETE- The Cutie Mark Crusaders invent a time machine, and travel twenty-five years into the future. They wish to find their adult selves, and discover what their cutie marks will be, but instead they uncover something none of them are prepared for.

Will the Crusaders be able to prevent a terrible tragedy in the Apple Family's future? Can the time-space continuum survive the mayhem caused by the three hyperactive fillies, or will they cause a paradox and destroy Equestria?