Only a day after returning from the past, Batman and his allies discover that the world isn't quite the same as they left it. The entire island of Japan no longer exists and neither do the heroes of the Justice League. B…

蝙蝠侠、小丑、哈莉·奎茵、罗宾等齐齐穿越到了日本战国时代，小丑及他的邪恶盟友们想要更改这个国家的历史走向，蝙蝠侠必须出面，阻止这一切。