Frank travels back in time to save the life of an important scientist and researcher for the Backstep program. Parker is in trouble after a Backstep goes wrong and he ends up traveling back several times, causing a time-loop effect. Before each time he loops, something goes wrong on his mission, and becomes an advantage to his situation for the next time he loops.
After a meteor shower devastates an orbiting space station by knocking off its fuel line and then it explodes, Frank must travel back seven days to repair thw problem.