Two years later, small black holes have begun appearing across the Japanese landscape. Capable of sucking in matter, energy and light, they threaten the very existence of the planet. Military research suggests that the 2003 experiment sent the soldiers and their weaponry 456 years back in time to Japan's Warring States era. Now, a second squadron must travel back in time to the year 1549 on a rescue mission to save their fellow soldiers and restore the past.The problem is, they only have 74 hours to put history back on course...