A decade after humanity's desperate fight against the Festum, the survivors of Tatsumiyajima Island attempt to rebuild something resembling normalcy. Kazuki Makabe and his generation have traded their cockpits for civilian life, but peace proves harder to maintain than victory ever was. When a distress signal emerges from an unexpected source, the fragile stability shatters, forcing former pilots to confront whether they can truly leave their war behind. Behind the Line strips away the apocalyptic scale of previous conflicts to examine what happens when soldiers become neighbors again. The film focuses on the quiet struggles of adaptation: relationships tested by shared trauma, the weight of survivor's guilt, and the impossible choice between staying buried in the past or risking connection with others. Character moments carry as much weight as any action sequence, grounding the mecha genre in genuine human consequence. This entry welcomes newcomers while rewarding longtime followers with deeper insight into how people heal after world-ending wars. It's a story about the life you build when you're no longer fighting to survive.