The story follows orphaned street kids Black (Kuro) and White (Shiro), known as the Cats, defending their gritty Treasure Town from yakuza-backed corporate developers planning an amusement park. An all-Japanese voice cast anchors the authentic urban Japanese setting with no race or gender swaps and no forced diversity mandates.

The narrative centers on brotherhood between the two leads, personal balance, and community preservation, free of identity politics, systemic oppression framing, or any lecture moments. Creator statements focus exclusively on humanism, love, and equilibrium of opposites, with director Michael Arias highlighting contrasts such as good versus evil and hope versus regret drawn from Eastern philosophy and classic storytelling rather than contemporary activism. This approach keeps the film centered on universal human themes without injecting modern social justice elements, resulting in a work that prioritizes emotional and philosophical depth over ideological messaging.