In a dystopian society ruled by a military regime, Japan grapples with the aftermath of a government overthrow. Ten years have passed since the prime minister's public execution, leaving the country in the grip of oppression and rebellion. Amidst the chaos, a group of teenage operatives known as the "Shadow Youth" emerges, trained in secrecy to combat the regime's tyranny. Led by Captain Kawasaki, Team Eagle embarks on a dangerous mission to retrieve a vital document from a heavily fortified military facility. With their skills and determination, they navigate treacherous obstacles and evade the ever-watchful eyes of the State Intelligence and Counter Combat Team (S.I.C.C.T), a group of ruthless teenage spies loyal to the regime. As the stakes escalate, Team Eagle finds themselves embroiled in a deadly game of cat and mouse, facing betrayal, sacrifice, and moral dilemmas at every turn. Alongside their allies, including the enigmatic Black Cobra squad, they must uncover the truth behind the regime's grip on power and ignite the spark of resistance among the oppressed masses. But as they delve deeper into the heart of darkness, they realize that victory may come at a cost they never imagined. With time running out and the fate of their nation hanging in the balance, the Shadow Youth must rise to challenge the shadows of oppression and fight for a future where freedom and justice prevail.