In the year 2999, an evil planet has sent armies to four different time periods, with the objective of changing history in order to make mankind easier to expunge in the present. The "Time Lord" has to destroy all the armies by January 1st, 3000 or he'll self-destruct along with the time machine.

Against link_7777 they don't stand a chance, as he quickly runs through the levels destroying the armies and never taking damage.