Die Yamato führt einen Test ihres Warp-Systems durch, indem sie von der Mars-Umlaufbahn zum Jupiter fliegt. Doch das Schiff erleidet einen Motorschaden und landet auf einem mysteriösen Kontinent, der in der Umlaufbahn des Jupiters schwebt. Während der Reparatur starten die Gamilas allerdings einen Überraschungsangriff.
On Pluto, Gantz suggests sending out a fleet after the Yamato. Schultz turns down the suggestion, preferring to see what the Yamato does before attempting anything. After making a space warp, the Yamato 's main engine isn't transferring energy correctly, so Captain Okita orders the Yamato to land on a floating continent orbiting Jupiter, to make repairs to the engine. On the floating continent, Captain Okita orders the crew of the Yamato to go out and collect samples from the continent. After analyzing some of the plant samples from the continent, XO Shiro Sanada discovers that the floating continent is artificially made by the Gamilans. Meanwhile Raleta, commander of the Gamilas resupply base on the floating continent, gets a message from Gantz, ordering him to dispatch the combat fleet of four ships to attack the Yamato. The Yamato destroys three of the four ships sent after them, and then takes off from the continent. Okita orders Kodai to test fire the Wave Motion Cannon at the floating continent. Kodai fires the gun, destroying the entire continent. Nanbu is thrilled at the power of the weapon, but Okita says that the Yamato 's weaponry is for self-defense only, questioning whether they have done the right thing.
A causa di problemi tecnici, la Yamato atterra su un continente che orbita attorno a Giove. Attaccata dai nemici, finisce per distruggerli usando il cannone ad Onde.
火星軌道から木星圏へワープシステムのテストする宇宙戦艦ヤマト。エンジントラブルに見舞われたヤマトは木星に浮遊する謎の大陸に着地し修理を行うが、ガミラスの襲撃を受けてしまう。苦戦する中、遂に沖田は新兵器・波動砲の使用を決意する!
啟程之時已經來臨，大和號將前往希望的星球，能夠拯救地球的只有你們…只有你們，越過光之屏障，翱翔吧，大和號．木星，在此大和號將揭開它的面紗，以真面目示人，那份令人畏懼的力量究竟…距離人類滅亡還有364日
