In 2977 A.D., mankind has developed the technology to head into space. Captain Harlock, a reknowned space pirate, is the only man who sees the impending crisis approaching Earth.

A transport ship unit is attacked by an unidentified flying object; they use a girl entrusted to Harlock, to lure him out.

The town is sent into panic by the sphere that landed.

Tadashi exits the Arcadia; Professor Kusko deciphers the characters written on the pennant.

Tadashi is confused upon joining Harlock's crew.

Harlock wants to test Tadashi's skills; Harlock sends the crew to gather pieces of the wreckage from the attacked Mazone battleship.