"Space Battleship Yamato 2199 Chapter 7: Soshite Kan wa Iku" continues the journey of the Yamato crew as they venture deeper into space to save Earth from the Gamilas threat. The episode focuses on the aftermath of the Yamato's encounter with the Gamilas forces and the emotional toll it takes on the crew. Captain Okita remains steadfast in his leadership, guiding the ship through treacherous territory while grappling with his declining health. The crew faces internal conflicts and moral dilemmas as they confront the realities of war and the sacrifices required to complete their mission.

Key developments include the introduction of new challenges, such as navigating a dangerous asteroid field and dealing with the psychological strain of prolonged space travel. The episode also delves into the backstory of key characters, providing deeper insight into their motivations and relationships. Susumu Kodai and Yuki Mori's dynamic is further explored, highlighting their growing bond amidst the chaos. Meanwhile, the Gamilas forces, led by Desler, continue to pursue the Yamato with relentless determination, setting the stage for escalating tensions and future confrontations.

The narrative balances action sequences with moments of introspection, emphasizing the human cost of the mission. Themes of hope, resilience, and unity are central as the crew rallies together to overcome seemingly insurmountable odds. The episode sets up critical plot points for the series' overarching story, maintaining a sense of urgency and anticipation as the Yamato inches closer to its ultimate goal.