A transport ship unit is attacked by an unidentified flying object as it exits Planet No.7. Believing Harlock is behind this attack, they decide to use Mayu, a girl entrusted to Harlock by his dear friend, to lure him out. But we Harlock and crew experience the first aggressive attack by a mysterious enemy known as the Mazone. Realizing they are under attack. Dr. Daiba and his son, Tadashi, go to the Prime Minister's residence to plead with the Prime Minster. However, the foolish Prime Minister doesn't see the impending danger and the invading object touches down on Earth.
—Anonymous